Cobertura vacinal e fatores associados ao esquema incompleto de vacinação em crianças aos 12 e 24 meses de idade em cidade de médio porte na região nordeste do Brasil / Vaccination coverage and factors associated with incomplete vaccination schedule in children at 12 and 24 months of age in a medium-sized city in the northeastern region of Brazil

Introdução: A expressiva queda nas coberturas vacinais, no Brasil, a partir de 2016, que persistem até os dias atuais, constitui relevante problema de saúde pública, tornando prioridade estudos sobre seus determinantes em diferentes contextos. Objetivo: Estimar a cobertura vacinal atualizada e oportuna aos 12 e 24 meses para cada vacina e para o esquema completo e analisar os fatores associados aos esquemas incompletos, atualizado e oportuno, de vacinação em coorte de nascidos em 2018, em Arapiraca. Métodos: Estudo transversal, descritivo e analítico, em amostra representativa da coorte de nascidos vivos, em Arapiraca (AL), em 2018. As fontes de informação foram: Sistema de Informação de Nascidos Vivos; Sistema de Informação sobre Mortalidade; Prontuário Eletrônico do Cidadão; Registros de vacinação e Prontuários das Unidades Sanitárias. Foram estimadas as coberturas vacinais atualizadas e oportunas por vacina e do esquema completo em porcentagem e com intervalo de confiança de 95%, por zona rural e urbana. A associação entre o esquema incompleto de vacinação e as variáveis independentes foi investigada por meio da estimativa das razões de prevalência bruta e ajustada e os respectivos intervalos de 95% confiança, aplicando-se a regressão de Poisson. Resultados: Foram estudadas 318 crianças. A cobertura média do esquema vacinal completo e atualizado aos 12 meses foi 91,8%, respectivamente, 93,6% e 88,8%, nas áreas urbanas e rurais; aos 24 meses declinou para 75,2%, respectivamente, 76,2% e 73,3%, em zonas urbanas e rurais. A cobertura oportuna aos 12 meses, foi de 47,8%, sendo mais elevada na zona rural, 50,9% versus 46,0% (p>0,05), enquanto que aos 24 meses declina para 9,1%, sendo mais elevada em áreas rurais, 14,7% versus 5,9% (p<0,05). As vacinas com menores coberturas foram: i) esquema atualizado aos 12 meses, a segunda dose da Rotavírus Humano com 96,2% e aos 24 meses, a primeira dose de Varicela e a dose única de Hepatite A com 92,1%; ii) esquema oportuno aos 12 meses, temos a terceira dose de VIP/VOP, com 66,7%, e aos 24 meses, foi o primeiro Reforço da DTP, com 24,5%. As exposições que se mostraram independentemente associadas ao esquema incompleto atualizado e oportuno aos 12 e 24 meses foram: escolaridade da mãe inferior a oito anos ou igual/superior a 12 anos de estudo; mãe com menos de sete consultas de pré-natal; mãe residente em área rural; nascer com menos de 2.800 gramas. Contudo, mostrou-se inversamente associado ao desfecho: nascer com menos de 2.800 gramas no esquema incompleto atualizado aos 12 meses; nascer com peso entre 2.800 e 3199 gramas no esquema incompleto oportuno aos 12 meses; residir em área rural no incompleto oportuno aos 24 meses. Conclusões: Os resultados sugerem, entre as estratégias para aumentar as coberturas vacinais: políticas educativas com foco específico em segmentos mais pobres e mais ricos da população; o fortalecimento do vínculo dos serviços com a comunidade, com medidas voltadas a melhor estruturação das salas de vacinação e diminuição da rotatividade dos funcionários e o fortalecimento dos programas de saúde materno-infantil, elevando a cobertura dos programas de pré-natal e assistência à saúde dos lactentes.

Introduction: The significant decline in vaccination coverage in Brazil since 2016, persisting to the present day, constitutes a relevant public health problem, making studies on its determinants in different contexts a priority. Objective: To estimate the updated and timely vaccination coverage at 12 and 24 months for each vaccine and for the complete schedule, and to analyze the factors associated with incomplete, updated, and timely vaccination schedules in a cohort of infants born in 2018 in Arapiraca. Methods: A cross-sectional, descriptive, and analytical study was conducted on a representative sample of the cohort of live births in Arapiraca (AL), in 2018. The sources of information included: Live Birth Information System; Mortality Information System; Electronic Citizen Records; Vaccination Records; and Sanitary Unit Records. Updated and timely vaccination coverage rates were estimated for each vaccine and for the complete schedule, presented as percentages with a 95% confidence interval, stratified by rural and urban areas. The association between incomplete vaccination schedule and independent variables was investigated through estimation of crude and adjusted prevalence ratios and their respective 95% confidence intervals, using Poisson regression. Results: A total of 318 children were studied. The average coverage of the complete and updated vaccination schedule at 12 months was 91.8%, with rates of 93.6% and 88.8% in urban and rural areas, respectively. By 24 months, coverage declined to 75.2%, with rates of 76.2% and 73.3% in urban and rural areas, respectively. Timely coverage at 12 months was 47.8%, higher in rural areas at 50.9% versus 46.0% in urban areas (p>0.05). By 24 months, timely coverage decreased to 9.1%, higher in rural areas at 14.7% versus 5.9% in urban areas (p<0.05). Vaccines with lower coverage rates included: i) at 12 months, the second dose of Human Rotavirus with 96.2%, and at 24 months, the first dose of Varicella and the single dose of Hepatitis A with 92.1%; ii) for timely coverage at 12 months, the third dose of IPV/OPV had 66.7% coverage, and at 24 months, the first DTP booster had 24.5% coverage. Factors independently associated with incomplete updated and timely schedules at 12 and 24 months included: maternal education less than eight years or equal/superior to 12 years of schooling; mother with fewer than seven prenatal visits; mother residing in rural areas; and birth weight less than 2,800 grams. However, being born with less than 2,800 grams was inversely associated with incomplete updated schedules at 12 months; being born with weight between 2,800 and 3,199 grams was associated with incomplete timely schedules at 12 months; and residing in rural areas was associated with incomplete timely schedules at 24 months. Conclusions: The results suggest, among strategies to increase vaccination coverage: educational policies with specific focus on both the poorer and wealthier segments of the population; strengthening the bond between services and the community through measures aimed at better structuring vaccination rooms and reducing staff turnover; and enhancing maternal and child health programs by increasing coverage of prenatal programs and infant healthcare assistance.

Organisation et le fonctionnement de la surveillance épidémiologique de la rougeole dans le district sanitaire de Yopougon-est, Côte d'Ivoire de janvier 2022 à juin 2022 / NA

La rougeole est une maladie infantile banale, peut être mortelles quand elle est sous-estimée. Nous avons initié cette étude dont l'objectif général est d'analyser le système de surveillance épidémiologique de la rougeole dans le district sanitaire de Yopougon-Est.MéthodesNous avons procédé à une évaluation normative de la surveillance épidémiologique de la rougeole réalisée en 6 (Six) mois dans ledit district sanitaire. Les critères de sélection nous ont permis de sélectionner 30 personnels de santé impliqués dans la surveillance de la rougeole. RésultatsLes médecins étaient les plus représentés (40%), suivi des infirmiers (33,3%). Les agents avaient plus de 3 ans de service (73,3%). Plus de la moitié des agents étaient formés (56%) la moyenne d'année de service était de 5,33 ans.Dans notre étude, 93,3 % des agents connaissaient la définition d'un cas de rougeole. Les seuils d'alerte et épidémique étaient connus par 56,6% des agents enquêtés. La disponibilité des registres de consultation, fiche de notification hebdomadaire de cas au niveau des structures de santé étaient de 86,7 %. Pour la transmission des données, 70% des enquêtés avaient déclarés que les rapports se transmettaient au district hebdomadairement.Les prélèvements de sang avaient été réalisés chez tous les cas suspects (100%). Les cas confirmés de rougeole représentaient 26,8 % des échantillons.ConclusionLa rougeole est une maladie de l'enfance qui est évitable par la vaccination. Cependant à défaut de vaccination, il est impérieux de mettre en place une organisation pour la détection des cas de rougeole afin d'éviter des épidémies

Headache as the most prevalent post-vaccination adverse event after Covid-19 vaccination / Dor de cabeça como evento adverso pós-vacinação mais prevalente após a vacinação contra Covid-19

BACKGROUND: In 2020, the first vaccines were approved, according to the WHO. However, speculations arose regarding their efficacy and post-vaccination adverse events (AEFV). OBJECTIVE: To evaluate the prevalence of headache as AEFI from the SARSCoV-2 vaccine in Piauí, Brazil. METHODS: This is a quantitative, observational, cross-sectional, and prevalence study. Data were provided by the Post-Vaccination Adverse Event Information System (SI-AEFV), from reported cases from January to September 2021. Data were analyzed, and the research was approved by the UFPI Research Ethics Committee. RESULTS: A total of 2,008 cases were analyzed. Headache was reported in 752 cases (27.99%) as an AEFV after vaccination against SARS-CoV-2. In most cases, patients were from Teresina (67.62%), of brown race/ethnicity (52.67%), female (79.00%), and the majority were not healthcare professionals (54.27%). The most common age of patients, with the original data, was 33 years. After data correction, the most common age was 28 years. The majority of these cases were not severe (96.44%), and the majority of cases were associated with the first dose of the Covid-19-Covishield-Oxford/AstraZeneca vaccine (43.18%).CONCLUSION: Thus, it is concluded from the partial analysis of the results that headache is the most common adverse event after vaccination against SARS-CoV-2. The profile of patients with the most notifications was brown women aged 30 to 40 years who received the first dose of the Covid-19-Covishield-Oxford/AstraZeneca vaccine. Regarding the severity of events, the vast majority were considered non-severe, and no deaths were mentioned, demonstrating the safety of immunobiologicals.

FUNDAMENTO: Em 2020, foram aprovadas as primeiras vacinas, segundo a OMS. No entanto, surgiram especulações quanto à sua eficácia e eventos adversos pós-vacinais (EAPV). OBJETIVO: Avaliar a prevalência de cefaleia como EAPV da vacina SARSCoV-2 no Piauí, Brasil. MÉTODOS: Trata-se de um estudo quantitativo, observacional, transversal e de prevalência. Os dados foram fornecidos pelo Sistema de Informação de Eventos Adversos Pós-Vacinação (SI-AEFV), dos casos notificados no período de janeiro a setembro de 2021. Os dados foram analisados ​​e a pesquisa foi aprovada pelo Comitê de Ética em Pesquisa da UFPI. RESULTADOS: Foram analisados ​​2.008 casos. Cefaleia foi relatada em 752 casos (27,99%) como EAPV após vacinação contra SARS-CoV-2. Na maioria dos casos, os pacientes eram procedentes de Teresina (67,62%), de raça/etnia parda (52,67%), do sexo feminino (79,00%) e a maioria não era profissional de saúde (54,27%). A idade mais comum dos pacientes, com os dados originais, era de 33 anos. Após correção dos dados, a idade mais comum foi 28 anos. A maioria desses casos não foi grave (96,44%), e a maioria dos casos esteve associada à primeira dose da vacina Covid-19-Covishield-Oxford/AstraZeneca (43,18%).CONCLUSÃO: Assim, conclui-se a partir da análise parcial dos resultados de que cefaleia é o evento adverso mais comum após vacinação contra SARS-CoV-2. O perfil dos pacientes com mais notificações foi de mulheres pardas com idade entre 30 e 40 anos que receberam a primeira dose da vacina Covid-19-Covishield-Oxford/AstraZeneca. Quanto à gravidade dos eventos, a grande maioria foi considerada não grave e não foram mencionados óbitos, demonstrando a segurança dos imunobiológicos.

Determinantes del estado de vacunación infantil: abordando la brecha de equidad en República Dominicana-2019 / Determinants of childhood immunization status: addressing the equity gap in the Dominican Republic­2019

Introducción: Las desigualdades amenazan el progreso del país hacia la equidad y la cobertura de vacunación infantil. Siendo la cobertura inferior a la meta del 90% de la Organización Mundial de la Salud. Objetivo: Identificar los determinantes sociales y las desigualdades en el estado de vacunación infantil en República Dominicana, 2019. Métodos: Se realiza un análisis basado en la Encuesta de Indicadores Múltiples por Conglomerados. Incluyendo una muestra ponderada de 1674 niños de 12-23 meses. Se calcula la regresión logística multinomial para identificar factores asociados a la vacunación. Adoptando p<0,05 para significación estadística. Utilizando una razón de probabilidades ajustada con intervalo de confianza del 95%. Empleando HEAT 4.0 para medir desigualdades y SPSS.23 para gestión y análisis de datos. Resultados: La edad media de los niños fue 17,4±3,5 meses. El 33% de ellos estaban completamente vacunados. La cobertura fue significativamente menor entre hijos de madre sin educación [AOR= 7,27; IC95%= 2,98­17,74]. La mayor cobertura se concentra en niños con altos niveles de educación y riqueza. Conclusión: Para lograr una cobertura de vacunación completa y equitativa, las intervenciones de salud pública deben diseñarse para satisfacer las necesidades de grupos de alto riesgo.

Introduction: In the Dominican Republic, inequalities threaten progress towards childhood vaccination equity and coverage, the latter being inferior to the World Health Organization's 90% goal. Objective: Identify the social determinants and inequalities in the state of childhood vaccination in the Dominican Republic, 2019. Methods: An analysis based on the Multiple Indicator Cluster Surveys is conducted. Including a weighted sample of 1674 children aged 12-23 months. The multinomial logistic regression is calculated to identify factors associated with vaccination. Using p<0,05 for statistical significance and an adjusted probability ratio with a 95% confidence interval. Employing HEAT 4.0 to measure inequalities and SPSS.23 for data management and analysis. Results: The children's mean age was 17,4±3,5 months. 33% of them were completely vaccinated. Coverage was significantly lower in children of mothers without education [AOR= 7,27; CI95%= 2,98­17,74]. Coverage was the highest in kids with high levels of education and wealth. Conclusion: To achieve complete and equitable vaccine coverage, public health interventions should be designed to satisfy the needs of high-risk groups.

COVID-19 breakthrough infections among medical students under the SLICE and CLARO Programs: Ateneo School of Medicine and Public Health experience

Objective@#This study aims to report the incidence and characteristics of breakthrough infections among medical students in the first Philippine private medical school that resumed limited face-to-face classes and clinical rotations from July to December 2021. @*Methods@#This is a descriptive study using secondary worksheet from multiple-source records review of breakthrough infections among medical students from July to December 2021. @*Results@#Among the 837 vaccinated medical students, 23 (2.7%) experienced COVID-19 breakthrough infections. Of these, 9 were male and 14 were female. Four were asymptomatic and 19 were symptomatic. Of the 19 symptomatic, 18 had mild and 1 had severe disease. Mild infections presented with upper respiratory tract symptoms. Duration of symptoms ranged from 4 to 27 days with an average of 10 days. Timing of breakthrough infections ranged from 35 to 212 days after the second dose of COVID-19 vaccine with a mean of 86 days. Contact with confirmed cases was reported in 14 of 23 cases, 13 were from household members and none within the SLICE and CLARO programs. @*Conclusion@#Our study showed that even in the midst of the Delta surge, low breakthrough infection rate with mostly mildly symptomatic cases and no case transmissions within the SLICE and CLARO programs are possible with vaccination, regular health surveillance, and strict adherence to minimum health protocols.

Cobertura vacinal e taxa de abandono nas capitais do nordeste brasileiro entre 2018 e 2022 / Vaccination coverage and abandonment rate in Northeastern Brazilian capitals between 2018 and 2022 / Cobertura de vacunación y tasa de abandono en las capitales del Noreste Brasileño entre 2018 y 2022

Introdução: O Programa Nacional de Imunizações presente na Atenção Primária à Saúde coordena o processo de imunização e o torna mais eficaz, porém esse sistema enfrenta problemas como a falta de acesso à internet e desabastecimento de imunizantes, que prejudicam a cobertura vacinal da população e dificultam o registro eletrônico dos dados indicadores, além de aumentar a taxa de abandono vacinal. Objetivo:Analisar os indicadores de Cobertura Vacinal e Taxa de Abandono nas capitais do Nordeste nos últimos cinco anos. Metodologia:Estudo epidemiológico, quantitativo e descritivo. As nove capitais do Nordeste do Brasil foram selecionadas para o estudo. A temática abordada é a Taxa de Abandono Vacinal e a Cobertura Vacinal nos últimos cinco anos nas capitais. Os dados foram coletados através doSistema de Informação do Programa Nacional de Imunização e armazenadosno Microsoft Excel. Resultados:Quanto às taxasde cobertura vacinal, Fortaleza teve o maior percentual, com 74,87%. Maceió obteve o segundo maior índice, com 66,12%. Em relação às taxas de abandono vacinal, Salvador registrou o maior número,com 27,39% nos últimos cinco anos. Não obstante, João Pessoaobteve a menor taxa, com 16,08%. Conclusões:Verificou-se que Fortaleza teve a maiorCobertura Vacinal e Salvador teve a maiorTaxa de Abandono Vacinal.Algumas capitais tiveram redução naCobertura Vacinal e aumento na Taxa de Abandono Vacinalno período pandêmico, indicando a necessidade de mais pesquisas sobre o impacto da Covid-19 e a circulação de informações equivocadas sobre vacinação. Logo, a atuação da atenção primária à saúde é crucial para reverter essa tendência, trabalhando na implementação de campanhas de imunização e na educação em saúde (AU).

Introduction: The National Immunization Program present in Primary Health Carecoordinates the immunization process and makes it more effective, but this system faces problems such as lack of internet access and shortages of immunizers, which underminethe population's vaccination coverage and hinderthe electronic recording of indicator data, besides increasing the vaccination abandonment rate.Objective: To analyze the Vaccination Coverage and AbandonmentRate indicators in theNortheasterncapitalsover the last five years.Methodology: Epidemiological, quantitative and descriptive study. The nine capitals of NortheasternBrazil were selected for the study. The themesaddressed arethe VaccinationAbandonment Rate andtheVaccinationCoverage overthe last five years in the capitals. The data was collected through the National Immunization Program Information System and stored in Microsoft Excel.Results:As for vaccination coverage rates, Fortaleza had the highest percentage, with 74.87%. Maceió obtainedthe second highest index, with 66.12%. Regardingvaccinationabandonment rates, Salvador recordedthe highest number,with 27.39% over the last five years. Nonetheless, João Pessoa obtainedthe lowest rate, with 16.08%. Conclusions:It was found that Fortaleza had the highest Vaccination Coverage and Salvador had the highest VaccinationAbandonment Rate.Some capitals had a reduction in Vaccination Coverage and an increase in the VaccinationAbandonment Rate in the pandemic period, indicating the need for more research aboutthe impact of Covid-19 and the circulation of misinformation about vaccination. Therefore, the role of primary health care is essential forreversing this trend, working on the implementation of immunization campaignsand health education (AU).

Introducción:El Programa Nacional de Inmunizaciónpresente en la Atención Primariade Saludcoordina el proceso de inmunización y lo hace más eficaz, pero este sistema se enfrenta a problemas como la falta de acceso a internet y la escasez de inmunizadores, queperjudicanla cobertura de vacunación de la población y dificultan el registro electrónico de los datos de los indicadores, además de aumentar la tasa de abandono de vacunación.Objetivo:Analizar los indicadores de Cobertura de Vacunación y Tasa de Abandono en las capitales del Nordeste en los últimos cinco años.Metodología:Estudio epidemiológico, cuantitativo y descriptivo. Fueron seleccionadas para el estudio las nueve capitales del Nordeste de Brasil. LostemasabordadossonlasTasa de Abandono deVacunacióny la Cobertura de Vacunación en los últimos cinco años en las capitales. Los datos se recogieron a través del Sistema de Información del Programa Nacional de Inmunización y se almacenaron en Microsoft Excel.Resultados:En cuanto a las tasas de cobertura de vacunación, Fortaleza tuvo el porcentaje más elevado, con un74,87%. Maceióobtuvo lasegunda tasa más alta, con un66,12%. En cuanto a las tasas de abandono de vacunación, Salvador registró la cifra más alta, con un27,39% en los últimos cinco años. Sin embargo, João Pessoa obtuvola tasa más baja, con un16,08%.Conclusiones:Se notó queFortaleza tuvo la mayor Cobertura de Vacunación y Salvadortuvola mayor Tasa de Abandono de Vacunación. Algunas capitales tuvieron una reducción de la Cobertura de Vacunacióny un aumento de la Tasa de Abandono de Vacunacióndurante el período pandémico, indicandola necesidad de más investigaciones sobre el impacto de laCovid-19 y la circulación de información errónea sobre la vacunación. Por lo tanto, el rolde la atención primaria de salud es crucial para revertiresta tendencia, trabajando en la implementación de campañas de inmunización y educación sanitaria (AU).

Intervenções não farmacológicas para redução da dor relacionada à vacinação em lactentes: revisão integrativa / Non-pharmacological interventions to reduce vaccination-related pain in infants: an integrative review

Objetivo: Identificar evidências científicas relacionadas às intervenções não farmacológicas utilizadas para redução da dor relacionada à vacinação em lactentes. Métodos: Revisão integrativa, realizada com emprego da estratégia PICo nas bases de dados IBECS, MEDLINE e Scopus, no período de fevereiro a junho de 2022, que visou responder ao seguinte questionamento: quais as evidências científicas em relação às intervenções não farmacológicas utilizadas para redução da dor associada à vacinação em lactentes? Os descritores combinados com os booleanos OR e AND foram lactente, vacinação, dor, infant, vaccination e pain. Foram incluídos artigos no recorte temporal de 2011 a 2021, publicados nos idiomas português, inglês ou espanhol. Resultados: A amostra final foi composta por 32 estudos. As medidas de intervenção não farmacológicas propostas para o alívio da dor em lactentes submetidos à vacinação foram: aleitamento materno e soluções orais de açúcar; assistência profissional em sala de vacina; e medidas de estimulação sensorial. Conclusão: A utilização dessas estratégias evidenciadas na literatura científica é capaz de favorecer o manejo mais adequado da dor relacionada à administração de vacinas e, por conseguinte, aumentar o conforto e bem-estar do lactente, além de favorecer a adesão das famílias à vacinação. Descritores: Dor; Vacinação; Lactente; Intervenções Não Farmacológicas

Objective: To identify scientific evidence related to non-pharmacological interventions used to reduce vaccination-related pain in infants. Methods: This is an integrative review carried out using the PICo strategy, in the IBECS, MEDLINE and Scopus databases, from February to June 2022, which aimed to answer the following question: what is the scientific evidence regarding non-pharmacological interventions used to reduce pain associated with vaccination in infants? The descriptors combined with the OR and AND Booleans were infant, vaccination, pain. Articles from 2011 to 2021 and published in Portuguese, English or Spanish were included. Results:The final sample consisted of 32 studies. Non-pharmacological intervention measures proposed for pain relief in infants submitted to vaccination were: breastfeeding and oral sugar solutions; professional assistance in the vaccine room; and sensory stimulation measures. Conclusion: Using these strategies evidenced in the scientific literature is able to favor the most adequate management of pain related to vaccine administration and, therefore, increase infants' comfort and well-being, in addition to favoring families' compliance with vaccination. Descriptors: Pain; Vaccination; Infant; Non-Pharmacological Interventions

Inmunización con vacunas ARN mensajero contra la COVID-19 en pacientes adolescentes con antecedente de síndrome inflamatorio multisistémico: serie de casos / Immunization with messenger RNA vaccines against COVID-19 in adolescents with a history of multisystem inflammatory

Los niños cursan mayormente la infección por el virus SARS-CoV-2 en forma leve. Sin embargo, de forma muy infrecuente algunos pueden desarrollar una patología con marcada gravedad denominada síndrome inflamatorio multisistémico en niños relacionado temporalmente con COVID-19 (SIM-C). Dado su reciente surgimiento, aún hay aspectos de su fisiopatología que se desconocen. La posibilidad de recidiva en caso de reinfección o ante la vacunación contra SARS-CoV-2 son nuevos interrogantes a los que nos enfrentamos. Reportamos una serie de casos de 4 pacientes adolescentes que cursaron SIM-C y meses después han sido vacunados contra SARS-CoV-2 con plataformas ARN mensajero (ARNm) sin presentar recurrencia de la enfermedad ni efectos adversos cardiológicos

In most cases, children with SARS-CoV-2 have a mild infection. However, very rarely, some children may develop a severe disease called multisystem inflammatory syndrome in children temporally associated with COVID-19 (MIS-C). Given its recent emergence, some aspects of its pathophysiology are still unknown. The possibility of recurrence in case of reinfection or SARS-CoV-2 vaccination are new questions we are facing. Here we report a case series of 4 adolescent patients who developed MIS-C and, months later, received the SARS-CoV-2 vaccine with messenger RNA (mRNA) platforms without disease recurrence or cardiac adverse events.

Shoulder Injury Related to Vaccine Administration: Case Series / Lesão de ombro relacionada à administração de vacina: Série de casos

Abstract Objective Shoulder pain is a common presentation in the primary care setting, and shoulder pain after vaccination has a growing body of literature. The present study sought to understand how a standardized treatment protocol would aid patients experiencing shoulder injury related to vaccine administration (SIRVA). Methods Patients experiencing SIRVA were retrospectively recruited between February 2017 and February 2021. All patients were treated with physical therapy and offered a cortisone injection. Post-treatment range of motion (i.e., forward elevation, external rotation, internal rotation) and patients' reported outcomes were collected with the visual analogue scale (VAS), American Shoulder and Elbow Surgeons (ASES), simple shoulder test (SST), and single assessment numeric evaluation (SANE) scores. Results A total of 9 patients were retrospectively examined. Among them, 6 patients presented within one month of a recent vaccination event, while 3 patients presented 67, 87, and 120 days after vaccination. Furthermore, 8 of the patients completed physical therapy, and 6 of them underwent a cortisone injection. The follow-up time averaged 8 months. At final follow-up, the mean external rotation was 61º (standard deviation, SD±3º) and the mean forward elevation was 179º (SD±45º). Internal rotation ranged between L3 and T10. The VAS pain scores were 3.5/10.0 (SD±2.4), the mean ASES score was 63.5/100.0 (SD±26.3), and the SST scores were 8.5/12.0 (SD±3.9). Finally, the SANE scores were 75.7/100.0 (SD±24.7) and 95.7/100.0 (SD±6.1) in the injured and contralateral shoulders respectively. Conclusion Shoulder pain after a vaccination treated with physical therapy and cortisone injection ultimately resulted in favorable shoulder range of motion and functional score outcomes. Level of Evidence IV

Resumo Objetivo A dor no ombro é um quadro comum na atenção primária e há cada vez mais relatos acerca de sua ocorrência após a vacinação. Este estudo buscou entender como um protocolo de tratamento padronizado ajudaria pacientes com lesão no ombro relacionada à administração de vacina (SIRVA). Métodos Os pacientes com SIRVA foram recrutados de forma retrospectiva entre fevereiro de 2017 e fevereiro de 2021. Todos os pacientes foram submetidos à fisioterapia e receberam uma prescrição de cortisona injetável. A amplitude de movimento pós-tratamento (ou seja, elevação anterior, rotação externa, rotação interna) e os desfechos relatados pelo paciente foram analisados a partir das pontuações da escala visual análoga (EVA), da American Shoulder and Elbow Surgeons (ASES), do teste simples do ombro (SST) e da avaliação numérica única (SANE). Resultados No total, 9 pacientes foram examinados de maneira retrospectiva. Entre eles, 6 pacientes foram atendidos no primeiro mês após a vacinação e os outros três, depois de 67, 87 e 120 dias. Ademais, 8 dos pacientes fizeram todo o tratamento fisioterápico e 6 receberam uma injeção de cortisona. O período médio de acompanhamento foi de 8 meses. À última consulta, a rotação externa média foi de 61° (desvio padrão, DP±3°)ea elevação anterior média foi de 179° (DP ± 45°). A rotação interna variou entre L3 e T10. As pontuações de dor à EVA foram de 3,5/10,0 (DP ± 2,4) e o escore médio ASES foi de 63,5/100,0 (DP ± 26,3); as pontuações de SST foram 8,5/12,0 (DP ± 3,9). Por fim, os escores de SANE foram de 75,7/100,0 (DP ± 24,7) e 95,7/100,0 (DP ± 6,1) nos ombros lesionados e contralaterais, respectivamente. Conclusão A dor no ombro após a vacinação tratada com fisioterapia e injeção de cortisona melhorou a amplitude de movimento e os escores funcionais. Nível de Evidência IV

Respuesta inmunitaria anti-SARS-CoV-2: Infección Naturalvs. Vacunación / Anti-SARS-CoV-2 immune response: natural infection vs vaccination

Este trabajo es una revisión bibliográfica que compara la inmunidad anti-SARS-CoV-2 inducida por la infección natural y la inducida por vacunación, para entenderlas particularidades de la respuesta en cada caso, así como sus ventajas y desventajas. Se escogieron artículos que reportaran la medición de concentración de anticuerpos séricos, determinantes de inmunidad celular y/o evolución clínica de los pacientes. Se encontró que: A) Los pacientes recuperados de una infección por SARS-CoV-2 presentaron una respuesta mayor y más heterogénea de anticuerpos y células B de memoria que los pacientes vacunados, con un mayor número de linfocitos TCD4+, que cooperan con la diferenciación de linfocitos B y con la producción de anticuerpos neutralizantes. B) La vacunación previene la tormenta de citocinas asociada a la infección natural. C) Dos dosis de una vacuna basada en ARN mensajero logran una concentración de anticuerpos de clase IgG prácticamente igual a la de los pacientes severamente enfermos, pero sin el daño a los nódulos linfáticos asociado a la infección natural. D) Se puede aumentar el número de linfocitos B administrando dosis de refuerzo de la vacuna. Si bien, tanto la vacunación como la infección natural generan respuestas anti-SARS-CoV-2 significativas, la vacunación es el método más seguro para proteger a la población, pues evita el riesgo a la inmunopatología y a la mortalidad asociados con la infección natural. Más aún, la inmunidad híbrida (aquella que adquieren los pacientes que superaron la infección natural y fueron después vacunados) induce una producción de anticuerpos capaces de neutralizar por completo al SARS-CoV-2(AU)

This work is a bibliographic review that comparesanti-SARS-CoV-2 inmmune response induced by natural infección with that induced by vaccination, to understand theparticularities of each response, as well as their advantages and disadvantages. Research articles that reported levels of antibodies in serum, determinants of cellular inmmunity and/or clinical evolution of patients were chosen. It was found that: A) Pacients previously infected with SARS-CoV-2 presented a larger and more heterogeneous response of antibodies and memory B cells than vaccined patients, with a larger number of CD4+T cells that cooperate with the differentiation of B cells and production of neutralizing antibodies. B) Vaccination prevents the cytokine storm associated with natural infection. C) Two doses of an mRNA vaccine induced an IgG concentration nearly equal to severe ill patients but without the damage to lymph nodes associated with natural infection. D) B cell levels can be increased by giving booster doses of the vaccine. Althought both vaccination and natural infection generate significant anti-SARS-CoV-2 immune responses, vaccination is the safest method to protect general population, because it avoids the risk of immunopathology and mortality associated with natural infection. Futhermore, hybrid immunity (thatadquired by patients who overcame the natural infection and were later vaccinated), induces production of antibodies capable of completely neutralizing SARS-CoV-2(AU)

Vacunación contra el SARS-CoV-2 en el personal de salud / Vaccination against SARS-CoV-2 in health personnel

Introducción: El virus Sars-cov2 es el causante de una enfermedad respiratoria, cuyo grado de severidad es variable, de formas sintomáticas leves a graves. Debido a que no se ha encontrado un tratamiento eficaz para hacerle frente a esta patología, se ha puesto el foco en la prevención mediante vacunas. Una población objetivo de la primera y segunda fase de vacunación a nivel país, fue el personal de salud, por lo que se realiza una encuesta para determinar qué tipo de patologías de base presentan, rango etario predominante, si presentaron algún efecto adverso, y cuántas dosis de inmunización recibieron. Objetivos: Describir el porcentaje de vacunación contra Sars-cov2 en el personal de salud, las enfermedades de base, efectos adversos presentados y describir los motivos por el que se evita la vacunación. Materiales y métodos: Se realizó un estudio descriptivo, observacional y transversal mediante una encuesta en línea (Google Forms). En el cuestionario se registraron las siguientes variables: sexo, edad, profesión dentro del área de salud, departamento de residencia, enfermedad de base, dosis principales y de refuerzo recibidas, efectos adversos presentados, necesidad de atención médica posterior y razones por las que no se han aplicado todas las dosis. Resultados: La mayoría de los encuestados fueron parte del personal médico (85.4%), en su mayoría se encontraban entre los 20-29 años y los 40-49 años. El 48.6% no presenta patologías de base. El 96.3% de la población recibió 2 dosis de la vacuna para Sars-cov2. El 46.3% recibió 2 dosis de refuerzo. Discusión: La predisposición a completar el esquema fue más baja de lo esperado, siendo menor de la mitad. La predisposición para recibir la vacuna contra el COVID-19, en la población general fue de 52,02%. Cabe recalcar que el éxito de un programa de vacunación depende de la proporción de la población que desee vacunarse. Conclusión: La vacunación es un medio de prevención por lo que su promoción es un paso importante para evitar la enfermedad grave. Es necesario realizar una buena educación a toda la población sobre la eficacia, las dosis necesarias para obtener inmunidad, los efectos adversos y los motivos que deben retrasar la colocación de las dosis, porque, como se menciona anteriormente, el éxito de un programa de vacunación depende de la proporción de la población que desee vacunarse.

Introduction: The Sars-cov2 virus is the cause of a respiratory disease, whose degree of severity is variable, from mild to severe symptomatic forms. Since no effective treatment has been found to deal with this pathology, the focus has been on prevention through vaccination. A target population for the first and second phase of vaccination at the country level was health personnel. So a online survey is performed to determine what type of underlying pathologies they present, the age range predominance, the side effects displayed and how many doses they received. Objectives: Describe the percentage of vaccination against Sars-cov2 in health personnel, the underlying diseases, adverse effects and, to describe the reasons why vaccination is avoided. Materials and methods: A descriptive, observational and cross-sectional study is carried out using an online survey (Google Forms). The following variables were recorded in the questionnaire: sex, age, profession within the health area, department of residence, underlying disease, main and booster doses received, adverse effects presented, need for subsequent medical attention and reasons why they did not have been applied all the doses. Results: Most of the respondents were part of the medical staff (85.4%), the majority were between 20-29 years and 40-49 years. The 48.6% do not present basic pathologies. The 96.3% of the population received 2 doses of the Sars-cov2 vaccine. 46.3% received 2 booster doses. Discussion: The predisposition to complete the scheme was lower than expected, being less than a half. The predisposition to receive the COVID-19 vaccine in the general population was 52.02%. It should be emphasized that the success of a vaccination program depends on the proportion of the population that wishes to be vaccinated. Conclusion: Vaccination is a way of prevention, so its promotion is an important step to avoid a serious disease. It is necessary to give a good education to the entire population about the efficacy, the necessary doses to obtain immunity, the adverse effects and the reasons that should delay the doses, because, as mentioned above, the success of a vaccination program depends on the proportion of the population that wants to be vaccinated.

Outbreak report of SARS-CoV-2 infection by airborne transmission: Epidemiologic and molecular evidence / Reporte de un brote de infección por SARS-CoV-2 por transmisión aérea: evidencia epidemiológica y molecular

Introduction: It has been shown that the transmission of SARS-CoV-2 occurs mainly by air, and the risk of infection is greater in closed spaces. Objective: To describe the epidemiology, virology and molecular characterization of a COVID-19 outbreak at a closed vaccination point during the third wave of SARS-CoV-2 in Colombia. Materials and methods: Diagnostic tests, interviews, sampling, cell cultures and viral sequencing were carried out, the latter being molecular characterization and lineage identification. Results: Seven workers were positive for SARS-CoV-2; among these, 3 samples were analyzed, plus an additional sample belonging to the mother of the presumed index case; all samples were identified with lineage B.1.625, with a maximum of 2 nucleotides difference between them. Conclusions: Variant B.1.625 was identified as the cause of the COVID-19 outbreak, and a co-worker was also identified as the index case. Unexpectedly, attending a vaccination day became a risk factor for acquiring the infection.

Introducción. Se ha demostrado que la transmisión de SARS-CoV-2 se produce principalmente por vía aérea y el riesgo de infección es mayor en espacios cerrados con alta concentración de personas; este último factor se presentó en algunos de los puestos de vacunación de la ciudad de Medellín. Objetivo. Describir la epidemiología, virología y caracterización molecular de un brote de COVID-19 en un punto de vacunación cerrado durante la tercera ola de SARS-CoV-2 en Colombia. Materiales y métodos. Se realizaron test diagnósticos, entrevistas, toma de muestras, aislamiento viral y secuenciación genómica. Con esta última, se hizo la caracterización molecular y se identificó el linaje. Resultados. Siete trabajadores fueron positivos para SARS-CoV-2, y de estos, tres muestras fueron secuenciadas, más una muestra adicional perteneciente a la madre del presunto caso índice. Todas las muestras fueron identificadas con el linaje B.1.625, con un máximo de dos nucleótidos de diferencia entre ellas. Conclusiones. Se identificó la variante B.1.625 como la causante del brote de COVID-19, y también un compañero de trabajo fue identificado como el caso índice. De forma imprevista, asistir a una jornada de vacunación se convirtió en un factor de riesgo para adquirir la infección.

Hesitação vacinal: tópicos para (re)pensar políticas de imunização / Vaccine hesitancy: topics for (re)thinking immunization policies / Vacilación vacunal: temas para (re)pensar políticas de inmunización

A vacinação/imunização de rotina é intrínseca à prática da Atenção Primária à Saúde em todo o Brasil. Nos últimos anos, o país vem enfrentando questões como a queda e a heterogeneidade da cobertura vacinal, motivadas por determinantes diversos, um deles a hesitação vacinal. Este artigo de perspectiva pretende oferecer às/aos profissionais da Atenção Primária à Saúde outro olhar sobre o fenômeno da hesitação vacinal, com lentes múltiplas e específicas ao contexto, que permitam compreendê-lo em sua complexidade.

Routine vaccination/immunization is intrinsic to the Primary Health Care practice throughout Brazil. For the past few years, the country has faced issues such as the fall and heterogeneity of vaccination uptake rates, motivated by different causes, one of which is vaccine hesitancy. This perspective article intends to offer Primary Health Care professionals another look at the phenomenon of vaccine hesitancy, with multiple and context-specific lenses, which allow them to approach the theme and understand it in its complexity.

La vacunación/inmunización de rutina es intrínseca a la práctica de la Atención Primaria de Salud en todo Brasil. En los últimos años, el país ha venido enfrentando problemas como la caída y la heterogeneidad de las coberturas de vacunación, motivados por diferentes determinantes, una de ellas es la vacilación en la vacunación. Este artículo en perspectiva pretende ofrecer a los profesionales de Atención Primaria una mirada al fenómeno de la vacilación vacunal, con lentes múltiples y contextuales, que les permitan abordar el tema y comprenderlo en su complejidad.

Manual de organización y funciones de la Dirección de Inmunizaciones / Manual of organization and functions of the Directorate of Immunizations

La Dirección de Inmunizaciones, es una dirección especializada del Ministerio de Salud de El Salvador, que tiene asignada la rectoría de todos los aspectos relacionados a la vacunación e inmunización de la población salvadoreña. Esta Dirección es el resultado de una acción conjunta entre los países de la Región de las Américas y de organismos internacionales como la Organización Mundial de la Salud (OMS), su interés es contribuir con acciones tendientes a lograr coberturas universales de vacunación, con el fin de disminuir las tasas de mortalidad y morbilidad causadas por las enfermedades inmunoprevenibles y está sujeta conforme a la Ley de Vacunas. En este sentido y para documentar la organización y funcionamiento de dicha Dirección, se ha elaborado el presente manual como un instrumento técnico normativo de gestión institucional, en el cual se integra la organización y funcionamiento de las diferentes dependencias que lo componen, se describen y establecen los objetivos generales y específicos, las relaciones de autoridad y dependencia de cada ambiente, así como las relaciones de trabajo internas y externas. Tiene el propósito de identificar con claridad las funciones de cada una de las áreas administrativas que la integran, evitar la duplicidad de funciones, conocer las líneas de comunicación y de mando; permitiendo así contar con un instrumento técnico administrativo integrado, que sirva de referencia y consulta a todo el personal laborando en la institución

The Immunization Directorate is a specialized department of the Ministry of Health of El Salvador, who is assigned the rectory of all aspects related to vaccination and immunization of the Salvadoran population. This Address is the result of an action collaboration between the countries of the Region of the Americas and international organizations such as the World Health Organization (WHO), its interest is to contribute with actions aimed at achieving universal vaccination coverage, in order to reduce the rates of mortality and morbidity caused by vaccine preventable diseases and is subject to according to the Vaccination Law. In this sense and to document the organization and operation of said Directorate, has prepared this manual as a regulatory technical management instrument institution, which integrates the organization and operation of the different dependencies that compose it, describe and establish the general objectives and specific, the relationships of authority and dependency of each environment, as well as the internal and external working relationships. Its purpose is to clearly identify the functions of each of the areas that integrate it, avoid duplication of functions, know the lines of communication and command; thus allowing to have a technical administrative instrument integrated, that serves as a reference and consults all the personnel working in the institution

Estado de vacunación en pacientes con riesgo de enfermedades invasoras por bacterias capsuladas en un hospital pediátrico de Buenos Aires / Vaccination status in patients at risk for invasive disease with encapsulated bacteria at a children's hospital in the City of Buenos Aires

Introducción. El Ministerio de Salud contempla vacunas específicas para personas con riesgo elevado de infecciones invasoras por bacterias capsuladas (BC). En la actualidad se desconoce el cumplimiento del programa. El objetivo fue evaluar el estado de vacunación para BC en ≤ 18 años con factores de riesgo. Población y métodos. Estudio observacional, analítico, mediante encuesta a padres de ≤ 18 años con VIH, asplenia y/o déficit de complemento que concurrieron al vacunatorio de un hospital pediátrico de octubre de 2020 a septiembre de 2021. Se recabaron datos sociodemográficos y clínicos. Se evaluó el estado de vacunación para BC: neumococo, meningococo y Haemophilus influenzae b (Hib), calendario regular y antigripal. Se administró la escala de reticencia a la vacunación (ERV): rango 10-50. Se analizó la asociación entre las variables estudiadas y la vacunación para BC mediante regresión logística (OR, IC95%). Se utilizó la base datos REDCap® y STATA vs14®. Resultados. Participaron 104 sujetos, media 9,9 años (DE 4,4). Asplenia: 91,3 %, VIH: 7,6 % y déficit de complemento: 0,9 %. Nivel socioeconómico: pobreza relativa: 38,4 %, seguido por clase media: 37,5 %. Estado de vacunación completa para meningococo: 45 %, neumococo: 42 %, Hib: 97 %. El 77,9 % tenía al día el calendario regular y el 61,5 %, el antigripal. Media ERV: 41,9 (DE 3,2). No se encontraron asociaciones significativas entre las variables y el estado de vacunación para BC. Conclusiones. Un elevado porcentaje no tenía vacunación completa para BC, tampoco el calendario regular y antigripal. La confianza en la vacunación de los cuidadores fue elevada.

Introduction. The Ministry of Health has established specific vaccines for people at high risk for invasive infections with encapsulated bacteria (EB). There is currently no information about compliance with the vaccination schedule. Our objective was to assess EB vaccination status in subjects ≤ 18 years with risk factors. Population and methods. Observational, analytical study with a survey to parents of subjects aged ≤ 18 years with HIV, asplenia and/or complement deficiency attending a vaccination center at a children's hospital between October 2020 and September 2021. Sociodemographic and clinical data were collected. Their vaccination status for the EB pneumococcus, meningococcus, and Haemophilus influenzae type b (Hib), their regular vaccination and flu vaccination schedules were assessed. The vaccine hesitancy scale (VHS) was administered: range 10­50. The association between the study variables and EB vaccination was analyzed using logistic regression (OR, 95% CI). The REDCap® database and the STATA® v.14 software were used. Results. A total of 104 subjects participated; mean age: 9.9 years (SD: 4.4). Asplenia: 91.3%, HIV: 7.6%, and complement deficiency: 0.9%. Socioeconomic level: relative poverty: 38.4%, followed by middle class: 37.5%. Complete vaccination status: meningococcal vaccine 45%, pneumococcal vaccine: 42%, Hib: 97%. The regular vaccination and flu vaccination schedules were up-to-date in 77.9% and 61.5% of cases, respectively. Mean VHS score: 41.9 (SD: 3.2). No significant associations were observed between variables and EB vaccination status. Conclusions. A high percentage of subjects had not completed neither their EB vaccination nor their regular or their flu vaccination schedules. Caregivers' confidence in vaccines was high.

Lineamientos técnicos para la vacunación contra el SARS-CoV-2 / Technical guidelines for vaccination against SARS-CoV-2

La prevención y control de las enfermedades inmunoprevenibles, constituye uno de los elementos claves en la atención integral en salud, tendientes a disminuir las tasas de morbimortalidad en la población y grupos prioritarios de riesgo en El Salvador. Ante la necesidad apremiante de brindar alternativas esperanzadoras para el control de la mortalidad por dicha enfermedad, en nuestro país están por introducirse las vacunas que han mostrado la más alta eficacia, considerando los resultados prometedores de estudios existentes al momento. Este hecho, marca la necesidad, de diseñar los Lineamientos técnicos para la vacunación contra el SARS-CoV-2, a fin de establecer las disposiciones técnicas al personal de salud del Sistema Nacional Integrado de Salud en los procesos de conservación, transporte y aplicación de la vacuna a la población objetivo

The prevention and control of immunopreventable diseases constitutes one of the key elements in comprehensive health care, tending to reduce morbidity and mortality rates in the population and priority risk groups in El Salvador. Given the pressing need to provide hopeful alternatives for the control of mortality from this disease, the vaccines that have shown the highest efficacy are about to be introduced in our country, considering the promising results of existing studies at the moment. This fact marks the need to design the Technical Guidelines for vaccination against SARS-CoV-2, in order to establish the technical provisions for health personnel of the National Integrated Health System in the processes of conservation, transport and application of the vaccine to the target population

Eventos adversos pós-vacinais em pacientes imunizados contra a COVID-19 em um município do sul de Santa Catarina no ano de 2021 / Post-vaccine adverse events in patients immunized against COVID-19 in a munici-pality in the south of Santa Catarina state in 2021

A disponibilização em massa de vacinas contra o vírus SARS-CoV-2 é resultado de esforços científicos mundiais. Entretanto, a insegurança e a hesitação popular per-meiam os movimentos antivacinais. Objetivo: Analisar o perfil dos Eventos Adver-sos Pós-Vacinais (EAPV) na cidade de Tubarão-SC no ano de 2021. Metodologia: Estudo epidemiológico transversal com dados de todas as fichas de notificação padrão de EAPV no município de Tubarão em 2021. As variáveis analisadas foram o perfil epidemiológico do paciente, imunobiológico administrado, o tipo de evento e a evolução do caso. Calculou-se a taxa de incidência (TI) para 10 mil doses apli-cadas. Resultados: A população em estudo foi de 274 pacientes, sendo 73% do sexo feminino, com média das idades de 39,8±14,5 anos. Foram aplicadas 197.001 doses no ano de 2021, o que resultou em uma TI geral de EAPV de 13,9. Houve 206 reações notificadas em pacientes imunizados com a AstraZeneca (TI=29,1), 43 com a Pfizer (TI=5,1), 18 com a Coronavac (TI=4,8) e sete com a Janssen (TI=13,8). Houve apenas sete casos classificados como graves (TI=0,3) e, destes, um paciente evoluiu com óbito, sem relação causal estabelecida. Conclusão: A incidência geral de eventos graves foi baixa, o que corrobora o perfil de segurança dos imunobiológicos disponíveis contra a COVID-19 (AU).

The mass availability of vaccines against the SARS-CoV-2 virus is the result of worldwide scientific efforts. However, insecurity and popular hesitation permeate the antivaccine movements. Objective: Analyze the profile of Post-Vaccine Adverse Events (PVAE) in the city of Tubarão, SC, Brazil, in 2021. Methodology: Cross-sectional epidemiological study with data from all standard PVAE notification forms in the city of Tubarão-SC in 2021. The variables analyzed were the epidemiological profile of the patient, the immunobiological administered, the type of event and the evolution of the cases. The incidence rate (IR) was calculated for 10,000 doses ap-plied. Results: The study population was 274 patients, 73% were female, with a mean age of 39.8±14.5 years. A total of 197,001 doses were applied in the year 2021, resulting in an overall IR of 13.9. There were 206 reactions reported in pa-tients immunized with AstraZeneca (IR=29.1), 43 with Pfizer (IR=5.1), 18 with Coro-navac (IR=4.8) and seven with Janssen (IR=13.8). There were only seven cases classified as severe (IR=0.3) and, of these, one patient died, with no causal rela-tionship established. Conclusion: The overall incidence of serious events was low, which corroborates the safety profile of available immunobiologicals against COVID-19

Prevalence and underreporting of immunization errors in childhood vaccination: results of a household survey / Prevalencia y subregistro de errores de inmunización en la vacunación infantil: resultados de una encuesta de hogares / Prevalência e subnotificação de erros de imunização na vacinação de crianças: resultados de um inquérito domiciliar

ABSTRACT Objective: To investigate underreporting of immunization errors based on vaccination records from children under five years of age. Method: An epidemiological, cross-sectional analytical study, carried out through a household survey with 453 children aged 6 months to 4 years in three municipalities in Minas Gerais in 2021. A descriptive analysis was carried out, and the prevalence of the error was calculated per 100 thousand doses applied between 2016 and 2021. The magnitude was estimated of the association between variables by prevalence and 95% Confidence Intervals (95%CI). To analyze underreporting, State reporting records were used. Results: A prevalence of immunization errors was found to be 41.9/100,000 doses applied (95%CI:32.2 - 51.6). The highest prevalence occurred between 2020 (50.0/100,000 doses applied) and 2021 (78.6/100,000 doses applied). The most frequent error was an inadequate interval between vaccines (47.2%) associated with adsorbed diphtheria, tetanus and pertussis (DTP) vaccine (13.7/100,000) administration. Vaccination delay was related to immunization errors (7.55 95% CI:2.30 - 24.80), and the errors found were underreported. Conclusion: The high prevalence of underreported errors points to a worrying scenario, highlighting the importance of preventive measures.

RESUMEN Objetivo: Investigar el subregistro de errores de vacunación a partir de los registros de vacunación de niños menores de cinco años. Método: Estudio epidemiológico, analítico transversal, realizado mediante encuesta de hogares con 453 niños de 6 meses a 4 años en tres municipios de Minas Gerais en 2021. Análisis descriptivo y cálculo de la prevalencia de error por 100 mil dosis aplicadas entre 2016 y 2021. La magnitud de la asociación entre las variables se estimó mediante prevalencia e intervalos de confianza del 95% (IC95%). Para analizar el subregistro se utilizaron los registros de notificaciones estatales. Resultados: Se encontró una prevalencia de errores de inmunización de 41,9/100.000 dosis aplicadas (IC95%: 32,2 - 51,6). La prevalencia más alta se produjo entre 2020 (50,0/100.000 dosis aplicadas) y 2021 (78,6/100.000 dosis aplicadas). El error más frecuente fue un intervalo inadecuado entre vacunas (47,2%) asociado a la administración de la vacuna adsorbida contra la difteria, el tétanos y la tos ferina (DTP) (13,7/100.000). El retraso en la vacunación estuvo relacionado con errores de vacunación (7,55 IC 95%: 2,30 - 24,80), y los errores encontrados fueron subreportados. Conclusión: La alta prevalencia de errores no reportados apunta a un escenario preocupante, destacando la importancia de las medidas preventivas.

RESUMO Objetivo: Investigar a subnotificação de erros de imunização a partir dos registros de vacinação da caderneta de crianças menores de cinco anos. Método: Estudo epidemiológico, transversal analítico, realizado por inquérito domiciliar com 453 crianças de 6 meses a 4 anos em três municípios de Minas Gerais em 2021. Realizaram-se a análise descritiva e o cálculo da prevalência do erro por 100 mil doses aplicadas entre 2016 e 2021. Estimou-se a magnitude da associação entre as variáveis pela prevalência e Intervalos de Confiança 95% (IC95%). Para a análise da subnotificação, utilizaram-se os registros de notificação do Estado. Resultados: Encontrou-se uma prevalência de erros de imunização de 41,9/100.000 doses aplicadas (IC95%:32,2 - 51,6). A maior prevalência ocorreu entre 2020 (50,0/100.000 doses aplicadas) e 2021 (78,6/100.000 doses aplicadas). O erro mais frequente foi intervalo inadequado entre vacinas (47,2%) associado à administração da vacina adsorvida difteria, tétano e pertussis (DTP) (13,7/100.000). O atraso vacinal relacionou-se ao erro de imunização (7,55 IC95%:2,30 - 24,80), e os erros encontrados foram subnotificados. Conclusão: A alta prevalência de erros subnotificados aponta para um cenário preocupante, ressaltando a importância de medidas preventivas.