Hospital mortality from covid-19 in children and adolescents in Brazil in 2020-2021 / Mortalidade hospitalar por covid-19 em crianças e adolescentes no Brasil em 2020-2021

ABSTRACT OBJECTIVE To describe cases, deaths, and hospital mortality from covid-19 in children and adolescents in Brazil, according to age group, during the evolving phases of the pandemic in 2020 and 2021. METHODS Census of patients aged up to 19 committed with severe acute respiratory syndrome, due to covid-19 or unspecified, notified to the Brazilian Influenza Epidemiological Surveillance Information System, from January 1, 2020, to December 31, 2021. The two years were divided into six phases, covering the spread of the disease—first, second and third wave—as well as the impact of vaccination. The pediatric population was categorized into infants, preschoolers, schoolchildren, and adolescents. Hospital mortality was assessed by pandemic phase and age group. RESULTS A total of 144,041 patients were recorded in the two years, 18.2% of whom had confirmed cases of covid-19. Children under 5 years old (infants and preschoolers) accounted for 62.8% of those hospitalized. A total of 4,471 patients died, representing about 6.1 deaths per day. Infants were the ones who most progressed to the intensive care unit (24.7%) and had the highest gross number of deaths (n = 2,012), but mortality was higher among adolescents (5.7%), reaching 9.8% in phase 1. The first peak of deaths occurred in phase 1 (May/2020), and two other peaks occurred in phase 4 (March/2021 and May/2021). There was an increase in cases and deaths for younger ages since phase 4. Hospital mortality in the pediatric population was higher in phases 1, 4, and 6, following the phenomena of dissemination/interiorization of the virus in the country, beginning of the second wave and beginning of the third wave, respectively. CONCLUSION The absolute number of cases of covid-19 in children and adolescents is significant. Although complete vaccination in descending order of age provided a natural deviation in age range, there was a greater gap between the curve of new hospitalized cases and the curve of deaths, indicating the positive impact of immunization.

RESUMO OBJETIVO Descrever casos, óbitos e mortalidade hospitalar por covid-19 em crianças e adolescentes no Brasil, conforme faixa etária, durante as fases de evolução da pandemia em 2020 e 2021. MÉTODOS Censo de pacientes de até 19 anos internados com síndrome respiratória aguda grave, por covid-19 ou não especificada, notificados ao Sistema de Informação de Vigilância Epidemiológica da Gripe do Brasil, entre 1 de janeiro de 2020 e 31 de dezembro de 2021. Os dois anos foram divididos em seis fases, abrangendo a disseminação da doença − primeira, segunda e terceira onda −, bem como o impacto da vacinação. A população pediátrica foi categorizada em lactentes, pré-escolares, escolares e adolescentes. A mortalidade hospitalar foi avaliada por fase da pandemia e faixa etária. RESULTADOS Foram contabilizados 144.041 pacientes nos dois anos, sendo 18,2% casos de covid-19 confirmados. Menores de 5 anos (lactentes e pré-escolares) corresponderam a 62,8% dos hospitalizados. Evoluíram a óbito 4.471, representando cerca 6,1 óbitos por dia. Os lactentes foram os que mais evoluíram para unidade de terapia intensiva (24,7%) e apresentaram o maior número bruto de óbito (n = 2.012), porém a mortalidade foi maior entre os adolescentes (5,7%), chegando a 9,8% na fase 1. O primeiro pico de óbitos ocorreu na fase 1 (maio/2020), e outros dois picos ocorreram na fase 4 (março/2021 e maio/2021). Verificou-se avanço de casos e óbitos para as idades inferiores desde a fase 4. A mortalidade hospitalar na população pediátrica foi maior nas fases 1, 4 e 6, acompanhando os fenômenos de disseminação/interiorização do vírus no país, início da segunda onda e início da terceira onda, respectivamente. CONCLUSÃO O número absoluto de casos de covid-19 em crianças e adolescentes é expressivo. Embora a vacinação completa em ordem decrescente de idade tenha proporcionado um desvio natural de faixa etária, ocorreu um distanciamento maior entre a curva de novos casos hospitalizados e a curva de óbitos, indicando o impacto positivo da imunização.

Seroprevalence of SARS-CoV-2 antibodies in schoolchildren in the city of São Paulo, 2020 / Soroprevalência de anticorpos do vírus SARS-CoV-2 em escolares no município de São Paulo, 2020

ABSTRACT OBJECTIVE To estimate seroprevalence of SARS-CoV-2 antibodies in schoolchildren aged 4 to 14 years living in the city of São Paulo, according to clinical, demographic, epidemiological, and social variables, during the school closure period as a measure against covid-19 spread. METHODS A serological survey was made in September 2020 with a random sample stratified by school system (municipal public, state public and private) type. A venous blood sample was collected using the Wondfo SARS-CoV-2 Antibody Test (lateral flow method) for detection of total SARS-CoV-2 virus antibodies. Semi-structured questionnaires were applied to collect clinical, demographic, social, and epidemiological data. RESULTS Seroprevalence of SARS-CoV-2 antibodies in schoolchildren was of 16.6% (95%CI 15.4-17.8). The study found higher seroprevalence in the municipal (18.5%; 95%CI 16.6-20.6) and state (16.2%; 95%CI 14.4-18.2) public school systems compared to the private school system (11.7; 95%CI 10.0-13.7), among black and brown students (18.4%; 95%CI 16.8-20.2) and in the most vulnerable social stratum (18.5 %;95%CI 16.9-20.2). Lower seroprevalence was identified in schoolchildren who reported following the recommended protective measures against covid-19. CONCLUSION Seroprevalence of SARS-CoV-2 antibodies is found mainly in the most socially vulnerable schoolchildren. This study can contribute to support public policies that reinforce the importance of suspending face-to-face classes and developing strategies aimed at protective measures and monitoring of the serological status of those who have not yet been included in the vaccination schedule.

RESUMO OBJETIVO Estimar a soroprevalência de anticorpos do vírus SARS-CoV-2 em escolares de quatro a 14 anos de idade residentes no município de São Paulo, segundo variáveis clínicas, demográficas, epidemiológicas e sociais, durante o período de fechamento das escolas como medida de controle da covid-19. MÉTODOS Realizou-se um inquérito sorológico em setembro de 2020 com amostra aleatória estratificada por tipo de rede de ensino (pública municipal, pública estadual e privada). Foi coletada amostra de sangue venoso utilizando-se o teste de imunoensaio de fluxo lateral da fabricante Wondfo para detecção de anticorpos totais contra o vírus SARS-CoV-2. Aplicaram-se questionários semiestruturados para o levantamento de dados clínicos, demográficos, sociais e epidemiológicos. RESULTADOS A soroprevalência de anticorpos do vírus SARS-CoV-2 em escolares foi de 16,6% (IC95% 15,4-17,8). O estudo encontrou soroprevalências mais elevadas na rede pública municipal (18,5%; IC95% 16,6-20,6) e estadual (16,2%; IC95% 14,4-18,2) em relação à rede privada (11,7; IC95% 10,0-13,7) e entre escolares da raça/cor preta e parda (18,4%; IC95% 16,8-20,2) e no estrato social mais vulnerável (18,5%; IC95% 16,9-20,2). A pesquisa identificou menores soroprevalências nos escolares que relataram seguir as medidas recomendadas de proteção contra a covid-19. CONCLUSÃO A soroprevalência de anticorpos contra o vírus SARS-CoV-2 atinge principalmente os escolares socialmente mais vulneráveis. Este estudo pode contribuir para embasar políticas públicas que reforcem a importância da suspensão das aulas presenciais e da necessidade de estratégias de medidas de proteção e acompanhamento do status sorológico daqueles que ainda não foram contemplados no calendário vacinal.

Caracterización epidemiológica, clínica y de laboratorio en pacientes positivos persistentes a COVID-19

Introducción: La COVID-19 es una preocupación mundial, requiere enfoque integral para reducir la transmisión, comenzando por la detección de casos, atención hospitalaria y seguimiento posterior. Objetivo: Caracterizar a pacientes positivos persistentes a COVID-19 en cuanto a epidemiología, clínica y datos de laboratorio. Métodos: Se realizó un estudio descriptivo transversal en 16 pacientes positivos persistentes a SARS-CoV-2 diagnosticados por RCP-TR en hisopado nasofaríngeo, en el Hospital Comandante Manuel Fajardo Rivero de Santa Clara en el período de septiembre 2020 a noviembre 2020. Resultados: Predominó el sexo femenino en un 75 %, el grupo de edad más representativo fue de 40-59 años de edad (68,75 %), el 37,50 % de los casos fueron asintomáticos y el síntoma más frecuente fue la fiebre menor de siete días 31,25 %. Existió linfopenia en el hemograma inicial con media en 27,49, índice neutrófilo leucocitario por encima de tres en cuatro pacientes con una media inicial 3,42. Estadía hospitalaria de 20,75 días de promedio. La mitad no tenía historia de enfermedad conocida, la comorbilidad más frecuente fue la hipertensión arterial 43,75 %. El índice neutrófilo leucocitario por encima de tres en pacientes con comorbilidades, evolutivo para todos menor de tres. Conclusiones: Predominó el sexo femenino, el grupo de edad más representativo fue de 40-59 años, es frecuente que se presenten asintomáticos y la fiebre fue el síntoma más usual. Existió linfopenia en el hemograma inicial. La mitad de los contagiados sin comorbilidades. El índice neutrófilo leucocitario evolutivo fue menor de tres para todos los pacientes.

Introduction: COVID-19 is a global concern, it requires a comprehensive approach to reduce transmission, starting with case detection, hospital care and subsequent follow-up. Objective: To characterize persistent COVID-19 positive patients in terms of epidemiology, clinical and laboratory data. Methods: A cross-sectional descriptive study was carried out in 16 persistent SARS-CoV-2 positive patients diagnosed by RT-CPR in nasopharyngeal swab, at Comandante Manuel Fajardo Rivero Hospital of Santa Clara in the period from September 2020 to November 2020. Results: The female sex predominated in 75%, the most representative age group was 40-59 years of age (68.75%), 37.50% of the cases were asymptomatic and the most frequent symptom was fever less than seven days 31.25%. There was lymphopenia in the initial hemogram with an average of 27.49, and a leukocyte neutrophil index above three in 4 patients with an initial average of 3.42. Hospital stay of 20.75 days on average. Half had no history of known disease, the most frequent comorbidity was arterial hypertension 43.75 %. The neutrophil leukocyte index above 3 in patients with comorbidities, evolutionary for all pariente was less than 3. Conclusions: The female sex predominates, the most representative age group is 40-59 years, it is frequent that they present asymptomatic and fever is the most usual symptom. There is lymphopenia on the initial blood count. Half of those infected without comorbidities. The evolutionary leukocyte neutrophil index was less than 3 for all patients.

Características clínico-epidemiológicas de COVID-19 en pacientes de la comunidad y del Hospital Regional Lambayeque, Perú

Introducción: Desde el inicio del brote de COVID-19 se han descrito diferencias entre las características clínicas, la evolución y el pronóstico de los pacientes de distintas localidades del Perú y del mundo. Objetivo: Determinar las características clínicas y epidemiológicas de la COVID-19 en pacientes de la comunidad y del Hospital Regional Lambayeque. Métodos: Se realizó un estudio de enfoque cuantitativo, nivel relacional y diseño observacional con datos secundarios. Se empleó la técnica de la documentación, se verificaron los datos recolectados en la ficha estandarizada de investigación clínica epidemiológica de COVID-19 del Ministerio de Salud del Perú. Resultados: De 4 463 pacientes analizados en el 36,4 % se detectó la presencia de SARS-CoV-2 y de éstos la mediana de edad fue de 40 años, siendo el sexo femenino el más frecuente (53,4 %). Del total de participantes, 23,7 % no registraron síntomas, sin embargo, los pacientes que declararon tos, dolor de garganta, malestar, fiebre/escalofrío, disnea, anosmia, ageusia y exudado faríngeo tenían más probabilidades de resultar infectados. De los positivos a la COVID-19, 40,2 % presentaban alguna comorbilidad. Las ocupaciones de policía/militar, ama de casa, estudiante y obrero de construcción civil tenían más probabilidades de dar positivo, mientras que, el personal sanitario tuvo 33 % menos probabilidad de infección. Conclusiones: Casi cuatro de cada 10 participantes tuvieron infección por SARS-CoV-2, existió predominio en los varones y personas en edad económicamente activa. La cuarta parte fueron asintomáticos. La tos, dolor de garganta, malestar y fiebre fueron los síntomas más frecuentes; menos frecuentes fueron la dificultad respiratoria, la anosmia, ageusia y exudado faríngeo, pero representaron mayor probabilidad de infección. Casi dos de cada 10 pacientes presentaron comorbilidad como problemas cardiovasculares, diabetes, asma y obesidad. En cuanto a las ocupaciones, el personal sanitario, policial y ama de casa fueron los grupos más afectados.

Introduction: Since the beginning of the outbreak, differences have been described between the clinical characteristics, evolution and prognosis of patients from different locations in Peru and the world. Objective: To determine the clinical and epidemiological characteristics of COVID-19 in patients from the community and the Lambayeque Regional Hospital. Methods: A study of quantitative approach, relational level and observational design with secondary data was carried out. The documentation technique was used, the data collected in the standardized COVID-19 clinical epidemiological investigation form of the Ministry of Health of Peru was verified. Results: Of 4,463 patients analyzed, 36.4 % had the presence of SARS-CoV-2, and of these the average age was 40 years, with the female sex being the most frequent (53.4 %). Of the total participants, 23.7 % had no symptoms, however, patients who reported cough, sore throat, malaise, fever/chills, dyspnea, anosmia, ageusia, and pharyngeal exudate were more likely to be infected with SARS- CoV-2. Of the positive patients for COVID-19, 40.2 % had some comorbidity. Likewise, the occupations of police/military, housewife, student and civil construction worker were more likely to test positive for COVID-19, while health personnel had a 33 % lower probability of SARS-CoV-2 infection. Conclusions: It is concluded that almost four out of 10 participants had SARS-CoV-2 infection, of which there was a predominance in men and people of economically active age. A quarter were asymptomatic. Cough, sore throat, malaise, and fever were the most frequent symptoms; likewise, respiratory distress, anosmia, ageusia, and pharyngeal exudate were less frequent, but represented a higher probability of infection. Almost two out of 10 patients had comorbidities such as cardiovascular problems, diabetes, asthma, and obesity. Regarding occupations, health personnel, police and housewives were the most affected groups.

Experiencias de la educación a distancia durante la pesquisa activa en la contingencia epidemiológica en Camajuaní / Experiences of distance education during door-to-door active screening in the epidemiological contingency in Camajuaní

RESUMEN La contingencia epidemiológica llevó a la reorganización del curso académico, por lo que se hizo necesario utilizar la modalidad a distancia, a la vez que se desarrollaba el proceso de la pesquisa como vía útil para la detección de enfermedades. A esta se incorporó, de forma escalonada, a todos los estudiantes de las Ciencias Médicas del municipio (396), que realizaron la pesquisa en los ocho consejos populares. Para esto se conformaron dúos, supervisados por los profesores, que los capacitaron en medidas de bioseguridad, lo que evidenció la connotación del binomio profesor-estudiante en el enfrentamiento a la Covid-19, proceso que garantizó la continuidad en la adquisición de los conocimientos en esta etapa.

ABSTRACT The epidemiological contingency led to the reorganization of the academic year, which made it necessary to use the distance modality, while developing the research process as a useful way to detect diseases. All the students of the medical sciences of the municipality (396), who carried out the door-to-door active screening in the eight popular councils, joined this in a staggered manner. For this, duos were formed, supervised by the teachers who trained them in biosafety measures, which evidenced the connotation of the teacher-student binomial in the confrontation with COVID-19, a process that guaranteed continuity in the acquisition of knowledge in this stage.

Women engaged in prostitution and COVID-19: why are they excluded from socially vulnerable groups? / Mulheres em situação de prostituição e covid-19: por que excluídas dos grupos vulneráveis?

ABSTRACT This study analyzed the exposure of women engaged in prostitution in downtown São Paulo to COVID-19. This cross-sectional study had a convenience sample selected in May 2021. We interviewed 219, mostly black, middle-aged, poor women with comorbidities. Among them, 61 had shown COVID-19 symptoms, 23, tested positive for the disease, seven underwent hospitalization, and four reported post-COVID-19 complications. Only 26 (30.2%) had been vaccinated. In addition to gender, race, and class inequalities, these women suffer both from a higher risk of contracting COVID-19 due to their working conditions and from the subsequent worsening of that disease due to age and lack of vaccination.

RESUMO Esta pesquisa analisou a exposição de mulheres em situação de prostituição no centro de São Paulo à covid-19. Este estudo transversal contou com amostra de conveniência selecionada em maio de 2021. Entrevistou-se 219 mulheres majoritariamente negras, de meia idade, pobres e com comorbidades. Dentre essas mulheres, 61 tiveram sintomas de covid-19, 23 com teste positivo,7 foram internadas e 4 relataram complicações pós-covid-19. Somente 26 (30,2%) haviam sido vacinadas. Além das desigualdades de gênero, raça e classe, essas mulheres são expostas a um maior risco de contraírem covid-19, devido às condições de trabalho e por apresentarem doença grave relacionada à idade e falta de vacinação.

Covid-19: temporal evolution and immunization in the three epidemiological waves, Brazil, 2020-2022 / Covid-19: evolução temporal e imunização nas três ondas epidemiológicas, Brasil, 2020-2022

ABSTRACT OBJECTIVE Describe the temporal evolution of morbimortality due to Covid-19 and vaccination coverage during the health emergency in Brazil. METHODS Number of cases and deaths due to Covid-19 were extracted from the public panel of the Brazilian Ministry of Health, according to epidemiological week (EW) and geographic region. Data on vaccines and variants were obtained, respectively, from the Information System of the National Immunization Program and the Genomic Surveillance System of SARS-CoV-2. RESULTS Three peaks of deaths characterized the evolution of the Covid-19 pandemic: in EW 30 of 2020, in the EW 14 of 2021 and in the EW six of 2022; three case waves, starting in the North and Northeast regions, with higher rates in the third wave, mainly in the South region. Vaccination started in the epidemiological week three of 2021, rapidly reaching most of the population, particularly in the Southeast and South regions, coinciding with a reduction exclusively in the mortality rate in the third wave. Only from the beginning of the second wave, when Gama was the dominant variant, 146,718 genomes were sequenced. From the last EW of 2021, with vaccination coverage already approaching 70%, the Omicron variant caused an avalanche of cases, but with fewer deaths. CONCLUSIONS We noticed the presence of three waves of Covid-19, as well as the effect of immunization on the reduction of mortality in the second and third waves, attributed to the Delta and Omicron variants, respectively. However, the reduction of morbidity, which peaked in the third wave during the domination of the Omicron variant, remained the same. The national and centralized command of the pandemic confrontation did not occur; thus, public administrators took the lead in their territories. The overwhelming effect of the pandemic could have been minimized, if there had been a coordinated participation of three spheres of the Brazilian Unified Health System administration, in the joint governance of the pandemic fight.

RESUMO OBJETIVO Descrever a evolução temporal da morbimortalidade por covid-19 e da cobertura vacinal no período da emergência sanitária no Brasil. MÉTODOS Número de casos e óbitos por covid-19 foram extraídos do painel público do Ministério da Saúde, conforme semana epidemiológica (SE) e região geográfica. Dados sobre vacinas e variantes foram obtidos, respectivamente, do Sistema de Informação do Programa Nacional de Imunizações e do Sistema de Vigilância Genômica do SARS-CoV-2. RESULTADOS A evolução da pandemia de covid-19 caracterizou-se por três picos de óbitos: na 30ᵃ semana epidemiológica de 2020, na 14ᵃ de 2021 e na sexta de 2022; três ondas de casos, iniciando-se nas regiões Norte e Nordeste, com maiores taxas na terceira onda, principalmente na região Sul. A vacinação teve início na terceira semana epidemiológica de 2021, atingindo rapidamente a maior parte da população, particularmente nas regiões Sudeste e Sul, coincidindo com redução da taxa de mortalidade, mas não de morbidade na terceira onda. No total, 146.718 genomas foram sequenciados, mas somente a partir do início da segunda onda, na qual a variante dominante foi a Gama. A partir da última SE de 2021, quando a cobertura vacinal já se aproximava de 70%, a variante Ômicron causou uma avalanche de casos, porém com menos óbitos. CONCLUSÕES É nítida a presença de três ondas de covid-19, bem como o efeito da imunização na redução da mortalidade na segunda e na terceira ondas, atribuídas às variantes Delta e Ômicron, respectivamente. Contudo não houve efeito na redução da morbidade, que atingiu o pico na terceira onda, na qual dominou a variante Ômicron. O comando nacional e centralizado do enfrentamento à pandemia não ocorreu; assim, os gestores locais assumiram a liderança em seus territórios. O efeito avassalador da pandemia poderia ter sido minimizado, caso houvesse a participação coordenada das três esferas de governo no SUS.

Anestesia en la línea roja de la COVID-19 / Anesthetic management in the red line of COVID-19

Introducción: Se exponen los resultados de la intervención anestesiológica de pacientes sospechosos o confirmados con COVID-19 (enfermedad por el nuevo coronavirus), atendidos en un hospital clínico quirúrgico designado para la atención de pacientes en el curso de la pandemia. Objetivo: Presentar las experiencias del manejo de los pacientes quirúrgicos afectados o sospechosos de contagio por el nuevo coronavirus (COVID-19). Métodos: Se recogieron los datos de todos los casos atendidos en el Hospital Militar Central Dr. Luis Díaz Soto fueran obstétricos (cesárea) o de otras especialidades (cirugía, ortopedia, urología). Resultados: Se realizaron 49 intervenciones anestésico-quirúrgicas, de ellas 13 cesáreas, 9 traqueostomías, 7 apendicectomías, 7 salpingectomías, 3 fracturas de cadera, y 1 amputaciones, 1 trepanación de cráneo, 2 drenajes de abscesos y 1 necrectomia, 1 nefrostomía, 1 nefrectomía, 1 cura y 2 laparotomías. Se realizaron las cesáreas con anestesia neuroaxialepidural (inyección única 13-26,5 por ciento) el resto de los procederes se realizaron con anestesia general orotraqueal (32-65,30 por ciento) y general endovenosa (4-8,16 por ciento). Fueron confirmados a la COVID-19 el 38,77 por ciento (19). Se egresaron a terapia intensiva 18 pacientes (36 por ciento), de ellos ventilados 12 (24 por ciento). Fueron casos sospechosos a la COVID-19, 30 casos para el 61,2 por ciento. Conclusiones: No ocurrieron accidentes anestésicos, o fallas en el control de la vía aérea, y no ocurrieron muertes perioperatorias. No existió personal contagiado con la COVID 19; el alto número de sospechosos constituyen un riesgo potencial de contagio(AU)

Introduction: The results are presented regarding anesthesiological intervention of patients suspected of or confirmed with COVID-19 (the disease caused by the new coronavirus), treated in a clinical surgical hospital designated for the care of patients during the pandemic. Objectives: To present the experiences regarding management of surgical patients affected by or suspected of infection by the new coronavirus (COVID-19). Methods: The data of all the cases treated in Hospital Militar Central Dr. Luis Díaz Soto were collected, regardless if they were obstetric cases (by cesarean section) or corresponding to other specialties (surgery, orthopedics, urology). Results: Forty-nine anesthetic-surgical interventions were performed, including thirteen caesarean sections, nine tracheostomies, seven appendectomies, the same number of salpingectomies, three hip fracture surgeries, and one amputation, one skull trepanation, two abscess drains and one necrectomy, one nephrostomy, one nephrectomy, one cure and two laparotomies. Cesarean sections were performed under neuraxial (epidural) anesthesia (thirteen single injections, accounting for 26.5 percent of cases). The rest of the procedures were performed under general orotracheal anesthesia (32 single injections, accounting for 65.30 percent of cases) and general intravenous anesthesia (4 single injections, accounting for 8.16 percent of cases). 38.77 percent (19) of cases were confirmed to COVID-19. Eighteen patients (36 percent) were discharged from the intensive care unit, twelve of which had been ventilated, a figure accounting for 24 percent of cases. There were thirty positive cases of COVID-19, accounting for 61.2 percent. Conclusions: There were no anesthetic accidents, failures in the airway control nor perioperative deaths. There were no personnel infected with COVID-19. The high number of suspects constitute a potential risk of contagion(AU)

Prevalence evolution of SARS-CoV-2 infection in the city of São Paulo, 2020-2021

ABSTRACT OBJECTIVE To estimate the evolution of the prevalence of SARS-CoV-2 virus infection among residents aged 18 years or over in the municipality of São Paulo. METHODS This is a population-based household survey conducted every 15 days, between June and September 2020, and January and February 2021. In total, the study comprised 11 phases. The presence of antibodies against SARS-CoV-2 was identified in venous blood using a lateral flow test, Wondfo Biotech. In the last phase, the researchers combined it with an immunoenzymatic test, Euroimmun. The participants also answered a semi-structured questionnaire on sociodemographic and economic factors, and on social distancing measures. Prevalence estimates and the 95% confidence interval were estimated according to regions, Human Development Index, sex, age group, ethnicity, education, income, and variables associated with risk or prevention of infection. To compare the frequencies among the categories of each variable, the chi-square test with Rao-Scott correction was used, considering a significance level of 5%. RESULTS In total, 23,397 individuals were interviewed and had their samples collected. The estimated prevalence of antibodies against SARS-CoV-2 ranged from 9.7% (95%CI: 7.9-11.8%) to 25.0% (95%CI: 21.7-28.7). The prevalence of individuals with antibodies against the virus was higher among black and brown people, people with lower schooling and income, and among residents of regions with lower Human Development Index. The lowest prevalences were associated with recommended measures of disease protection. The proportion of asymptomatic infection was 45.1%. CONCLUSION The estimated prevalence of the infection was lower than the cumulative incidence variation, except for the last phase of the study. The differences in prevalence estimates observed among subpopulations showed social inequality as a risk of infection. The lower prevalence observed among those who could follow prevention measures reinforce the need to maintain social distancing measures as a way to prevent SARS-CoV-2 infection.

Population-level seropositivity trend for SARS-Cov-2 in Rio Grande do Sul, Brazil

ABSTRACT OBJECTIVE To describe the evolution of seropositivity in the State of Rio Grande do Sul, Brazil, through 10 consecutive surveys conducted between April 2020 and April 2021. METHODS Nine cities covering all regions of the State were studied, 500 households in each city. One resident in each household was randomly selected for testing. In survey rounds 1-8 we used the rapid WONDFO SARS-CoV-2 Antibody Test (Wondfo Biotech Co., Guangzhou, China). In rounds 9-10, we used a direct ELISA test that identifies IgG to the viral S protein (S-UFRJ). In terms of social distancing, individuals were asked three questions, from which we generated an exposure score using principal components analysis. RESULTS Antibody prevalence in early April 2020 was 0.07%, increasing to 10.0% in February 2021, and to 18.2% in April 2021. In round 10, self-reported whites showed the lowest seroprevalence (17.3%), while indigenous individuals presented the highest (44.4%). Seropositivity increased by 40% when comparing the most with the least exposed. CONCLUSIONS The proportion of the population already infected by SARS-Cov-2 in the state is still far from any perspective of herd immunity and the infection affects population groups in very different levels.

Perfil dos casos notificados e confirmados de Covid-19 entre abril e maio de 2020 no Distrito Federal / Profile of Covid-19 notified and confirmed cases in the period from April and May 2020 in the Federal District / Perfil de casos notificados y confirmados de Covid-19 entre abril y mayo de 2020 en el Distrito Federal

Objetivo: Descrever o perfil epidemiológico e destacar a análise demográfica dos casos notificados e confirmados de COVID-19 no sistema de informação e agravos de notificação no Distrito Federal ­ Brasil. Método: Estudo descritivo de pesquisa documental e análise de dados secundários da vigilância epidemiológica do Boletim Epidemiológico de 09.05.2020. Resultados: Foram confirmados 2.576 casos da doença, 1.595 (61,9%) do sexo masculino, com idade média de 39 anos, 165 (0,16%) hospitalizados, 66 (2,5%) em Unidade de Terapia Intensiva. Conclusão: Confirmou-se a circulação do coronavírus humano no Distrito Federal nesse período e seu caráter de virulência relacionado a uma patologia pública de maior gravidade; dos 2.576 casos notificados e confirmados da doença, o maior número absoluto está na faixa etária de 30 a 39 anos e maior letalidade (1,6%) por faixa etária está no grupo de 80 ou mais.

Objective: to describe the epidemiological profile and to highlight the demographic analysis of the cases notified and confirmed by COVID-19 in the information system and notification conditions in the Federal District - Brazil. Method: a descriptive study of documentary research and analysis of secondary epidemiological data from the Epidemiological Bulletin of 09.05.2020. Results: 2,576 cases of disease were confirmed, 1,559 (61.9%) were male, with an average age of 39 years, 165 (0.16%) hospitalized, 66 (2.5%) in the Intensive Care Unit. Conclusion: A circulation of human coronavirus in the Federal District was confirmed during this period and its virulence character related to a more serious public pathology; of the 2,576 notified and confirmed cases of the disease, the highest absolute number is in the age group of 30 to 39 years and the highest lethality (1.6%) by age group is not in the group of 80 or more.

Objetivo: Describir el perfil epidemiológico y destacar el análisis demográfico de los casos notificados y confirmados de COVID-19 en el sistema de información y las condiciones de notificación en el Distrito Federal - Brasil. Método: Estudio descriptivo de investigación documental y análisis de datos secundarios de la vigilancia epidemiológica del Boletín Epidemiológico del 05/09/2020. Resultados: se confirmaron 2.576 casos de la enfermedad, 1.595 (61,9%) eran hombres, con una edad promedio de 39 años, 165 (0,16%) hospitalizados, 66 (2,5%) en la Unidad de Cuidados Intensivos. Conclusión: se confirmó la circulación del coronavirus humano en el Distrito Federal en este período y su carácter de virulencia relacionado con una patología pública más grave; de los 2,576 casos notificados y confirmados de la enfermedad, el número absoluto más alto está en el grupo de edad de 30 a 39 años y la mayor letalidad (1.6%) por grupo de edad está en el grupo de 80 o más.

Mortalidade de profissionais de enfermagem pelo Covid-19 em 2020: Brasil, Estado Unidos, Espanha e Itália / Mortality of nursing professionals by Covid-19 in 2020: Brazil, United States, Spain and Italy / Mortalidad de profesionales de enfermería por Covid-19 en 2020: Brasil, Estados Unidos, España e Italia

Objetivo: Analisar a mortalidade de profissionais de enfermagem (PE) pelo Covid19 no Brasil (BRA), Estados Unidos (EUA), na Espanha (ESP) e na Itália (ITA) no primeiro semestre do ano de 2020. Método: Pesquisa exploratória, descritiva e de abordagem quantitativa. Os dados foram solicitados junto ao Conselho Federal de Enfermagem (COFEN) e disponibilizados pelo Conselho Internacional de Enfermeiras (CIE). Após a sua captação, os mesmos foram organizados no software Microsoft Excel 2016® pertencente ao pacote Microsoft Office 2016®, sendo implementada análise estatística descritiva. Resultados: Foi identificado o universo de 677 registros de óbito de PE até o dia 19/05/2020. O BRA registrou a maior preponderância contabilizando 20,2% (n=137) dos casos, seguindo pelos EUA com 13,4% (n=91), ESP com 7,4% (n=50) e ITA com 5,8% (n=39). Considerações finais: Foi verificado aumento na frequência de registros de casos de mortalidade de PE por Covid-19 no recorte geográfico e histórico analisados.

Objective: To analyze the mortality of nursing professionals (PE) by Covid-19 in Brazil (BRA), United States (USA), Spain (SPA) and Italy (ITA) in the first half of 2020. Method: Exploratory, descriptive and quantitative research. The data were requested from the Federal Nursing Council (COFEN) and made available by the International Nurses Council (CIE). After being collected, they were organized in the Microsoft Excel 2016® software belonging to the Microsoft Office 2016® package, and a descriptive statistical analysis was implemented. Results: The universe of 677 death records of PE was identified until 05/19/2020. Brazil registered the largest preponderance accounting for 20.2% (n=137) of the cases, followed by the USA with 13.4% (n=91), Spain with 7.4% (n=50) and Italy with 5.8 % (n=39). Final considerations: There was an increase in the frequency of registration of cases of PE mortality by Covid-19 in the analyzed geographical and historical context

Objetivo: analizar la mortalidad de los profesionales de enfermería (EP) por Covid19 en Brasil (BRA), Estados Unidos (EEUU), España (ESP) e Italia (ITA) en el primer semestre de 2020. Método: investigación exploratoria, descriptiva y cuantitativa. Los datos fueron solicitados al Consejo Federal de Enfermería (COFEN) y puestos a disposición por el Consejo Internacional de Enfermeras (CIE). Después de ser recopilados, se organizaron en el software Microsoft Excel 2016® que pertenece al paquete Microsoft Office 2016®, y se implementó un análisis estadístico descriptivo. Resultados: El universo de 677 registros de defunciones de EP se identificó hasta el 19/05/2020. Brasil registró la mayor preponderancia con el 20,2% (n=137) de los casos, seguido de los EE.UU. Con el 13,4% (n=91), España con el 7,4% (n=50) e Italia con 5,8 % (n=39). Consideraciones finales: Hubo un aumento en la frecuencia de registro de casos de mortalidad por EP por parte de Covid-19 en el contexto geográfico e histórico analizado.