Seguimiento de los contactos de casos de tuberculosis / Follow-up of Contacts of Tuberculosis Cases

Introducción: La tuberculosis constituye la principal causa de muerte en el mundo por enfermedad infecciosa. Objetivo: Verificar el cumplimiento de las acciones de control de foco de los contactos de casos de tuberculosis. Métodos: Estudio descriptivo, transversal. Universo constituido por los 338 contactos identificados de 10 casos de tuberculosis. Los datos procedieron de encuestas epidemiológicas, base de datos de morbilidad y tarjetas de notificación de la unidad municipal de higiene y epidemiologia del municipio Boyeros. Se utilizaron las variables: edad, sexo, nivel educacional y ocupación. Se identificaron los factores de vulnerabilidad en los contactos y se verificó cumplimiento del examen médico, los complementarios, realización y resultado de prueba de tuberculina, quimioprofilaxis y seguimiento. Resultados: Prevaleció el sexo masculino (64,2 por ciento) y los mayores de 65 años (46,7 por ciento). Los grupos vulnerables más frecuentes fueron los contactos en unidades de salud con internamiento prolongado y más de 60 años (87,2 por ciento y 62,1 por ciento, respectivamente). No se detectó el número real de contactos y convivientes ni fue investigado el 100 por ciento. Las pruebas de tuberculina realizadas arrojaron el mayor porciento de no reactores, el 90 por ciento de los contactos recibieron quimiprofilaxis y su seguimiento fue deficiente. Conclusiones: La no detección oportuna de los contactos y convivientes de casos de tuberculosis y los incumplimientos de su estudio constituyeron las principales deficiencias de los controles de foco realizados. El seguimiento de los contactos fue inadecuado, lo que pudiera propiciar la aparición de nuevos casos de tuberculosis en el municipio(AU)

Introduction: Tuberculosis is worldwide the main cause of death due to infectious disease. Objective: To verify compliance with outbreak control actions associated with contacts of tuberculosis cases. Methods: Descriptive and cross-sectional study. The universe was made up of the 338 contacts identified from ten cases of tuberculosis. The data came from epidemiological surveys, morbidity database and notification cards of the municipal hygiene and epidemiology unit of Boyeros Municipality. The following variables were used: age, sex, educational level and occupation. The vulnerability factors in the contacts were identified, as well as compliance with medical examination, complementary tests, performance and result of tuberculin test, chemoprophylaxis and follow-up. Results: The male sex (64.2 percent) and people over 65 years of age (46.7 percent) prevailed. The most frequent vulnerable groups were contacts in health units with prolonged hospitalization and aged over 60 years (87.2 percent and 62.1 percent, respectively). The actual number of contacts and partners was not detected, nor 100 percent of them were investigated. The tuberculin tests carried out showed the highest percentage of non-reactors. 90 percent of the contacts received chemoprophylaxis and their follow-up was poor. Conclusions: There was no timely detection of the contacts and cohabitants of tuberculosis cases and no compliance with their study, which constituted the main deficiencies of the outbreak controls carried out. The follow-up of the contacts was inadequate, which could lead to the appearance of new cases of tuberculosis in the municipality(AU)

Industry and workplace characteristics associated with the downloading of a COVID-19 contact tracing app in Japan: a nation-wide cross-sectional study

BACKGROUND@#To combat coronavirus disease 2019 (COVID-19), many countries have used contact tracing apps, including Japan's voluntary-use contact-confirming application (COCOA). The current study aimed to identify industry and workplace characteristics associated with the downloading of this COVID-19 contact tracing app.@*METHODS@#This cross-sectional study of full-time workers used an online survey. Multiple logistic regression analysis was used to evaluate the associations of industry and workplace characteristics with contact tracing app use.@*RESULTS@#Of the 27,036 participants, 25.1% had downloaded the COCOA. Workers in the public service (adjusted odds ratio [aOR] = 1.29, 95% confidence interval [CI] 1.14-1.45) and information technology (aOR = 1.38, 95% CI 1.20-1.58) industries were more likely to use the app than were those in the manufacturing industry. In contrast, app usage was less common among workers in the retail and wholesale (aOR = 0.87, 95% CI 0.76-0.99) and food/beverage (aOR = 0.81, 95% CI 0.70-0.94) industries, but further adjustment for company size attenuated these associations. Workers at larger companies were more likely to use the app. Compared with permanent employees, the odds of using the app were higher for managers and civil servants but lower for those who were self-employed.@*CONCLUSIONS@#Downloading of COCOA among Japanese workers was insufficient; thus, the mitigating effect of COCOA on the COVID-19 pandemic is considered to be limited. One possible reason for the under-implementation of the contact tracing app in the retail and wholesale and food/beverage industries is small company size, as suggested by the fully adjusted model results. An awareness campaign should be conducted to promote the widespread use of the contact tracing app in these industries.

Condiciones estimadas para controlar la pandemia de COVID-19 en escenarios de pre y poscuarentena en el Perú / Estimated conditions to control the covid-19 pandemic in peruvian pre- and post-quarantine scenarios

RESUMEN Objetivos: Determinar la probabilidad de control del brote de la COVID-19 en el Perú, en un escenario pre y poscuarentena en modelos de simulaciones matemáticas. Materiales y métodos: Se realizan simu laciones de brotes para la pandemia de COVID-19, usando ecuaciones estocásticas bajo los siguientes supuestos: un R0 poblacional precuarentena de 2,7 o 3,5, y un R0 poscuarentena de 1,5, 2 o 2,7, positivos asintomáticos del 18% o 40%, y una capacidad resolutiva máxima de 50 o 150 pacientes en las unidades de cuidados intensivos. Se evalúa el éxito del aislamiento y rastreo de contactos, no se incluyen otras medidas de mitigación. Resultados: En la etapa precuarentena, el éxito en el control de más del 80% de las simulaciones se daba solo si el aislamiento de casos positivos se implantaba desde el primer caso, luego se tenía menos de un 40% de probabilidad de éxito. En la poscuarentena, con 60 casos positivos es necesario aislarlos precozmente, rastrear al 100% sus contactos y disminuir el R0 a 1,5 para que el control del brote tenga éxito en más del 80% de los casos. Otros escenarios tienen baja probabilidad de éxito. Conclusiones: El control del brote en el Perú en la etapa precuarentena demandaba requisitos de difícil cumplimiento, por ello la cuarentena era necesaria; para suspenderla con éxito se requeriría una impor tante reducción de la dinámica de propagación de la enfermedad, el aislamiento precoz de los positivos y el seguimiento de todos los contactos.

ABSTRACT Objectives: To determine the probability of controlling the outbreak of COVID-19 in Peru, in a pre- and post-quarantine scenario using mathematical simulation models. Materials and methods: Outbreak si mulations for the COVID-19 pandemic are performed, using stochastic equations under the following assumptions: a pre-quarantine population R0 of 2.7 or 3.5, a post-quarantine R0 of 1.5, 2 or 2.7, 18% or 40%, of asymptomatic positives and a maximum response capacity of 50 or 150 patients in the intensive care units. The success of isolation and contact tracing is evaluated, no other mitigation measures are included. Results: In the pre-quarantine stage, success in controlling more than 80% of the simulations occurred only if the isolation of positive cases was implemented from the first case, after which there was less than 40% probability of success. In post-quarantine, with 60 positive cases it is necessary to isolate them early, track all of their contacts and decrease the R0 to 1.5 for outbreak control to be successful in more than 80% of cases. Other scenarios have a low probability of success. Conclusions: The control of the outbreak in Peru during pre-quarantine stage demanded requirements that were difficult to comply with, therefore quarantine was necessary; to successfully suspend it would require a significant reduction in the spread of the disease, early isolation of positives and follow-up of all contacts of positive patients.

Preservação da privacidade no enfrentamento da COVID-19: dados pessoais e a pandemia global / Personal data usage and privacy considerations in the COVID-19 global pandemic

Resumo Dados ganham cada vez mais importância e valor na busca de respostas para enfrentar a COVID-19 tanto para a ciência quanto para as autoridades sanitárias. Em virtude da dificuldade de realizar diagnóstico da infecção na população em geral, iniciativas apoiadas em tecnologias digitais vêm sendo desenvolvidas por governos ou empresas privadas para possibilitar rastreamentos de sintomas, contatos e deslocamentos de modo a apoiar estratégias de acompanhamento e avaliação na vigilância de contágios. A despeito da importância e necessidade dessas iniciativas, questionamentos acerca da quantidade e tipos de dados pessoais coletados, processados, compartilhados e utilizados em nome da saúde pública, bem como os concomitantes ou posteriores usos desses dados, suscitam questionamentos éticos, legais e técnicos. Desafios que apontam para a necessidade de novos modelos de governança de dados e de tecnologias, responsáveis e transparentes, para controlar o Sars-Cov2 e as futuras emergências de saúde pública.

Abstract Data has become increasingly important and valuable for both scientists and health authorities searching for answers to the COVID-19 crisis. Due to difficulties in diagnosing this infection in populations around the world, initiatives supported by digital technologies are being developed by governments and private companies to enable the tracking of the public's symptoms, contacts and movements. Considering the current scenario, initiatives designed to support infection surveillance and monitoring are essential and necessary. Nonetheless, ethical, legal and technical questions abound regarding the amount and types of personal data being collected, processed, shared and used in the name of public health, as well as the concomitant or posterior use of this data. These challenges demonstrate the need for new models of responsible and transparent data and technology governance in efforts to control SARS-COV2, as well as in future public health emergencies.

Development and evaluation of an application for syphilis control / Desarrollo y evaluación de un aplicación para el control de la sífilis en gestantes / Desenvolvimento e avaliação de um aplicativo para o controle da sífilis em gestantes

ABSTRACT Objective: to develop and evaluate an application for syphilis control in pregnant women. Method: methodological research developed between March and November of 2016 in two phases: bibliographic survey of the years 2012 to 2016 in the databases PubMed, CAPES and Scopus and application development. Eight users participated in the usability test and five doctors and five nurses working in prenatal care participated in the evaluation. Results: the application contains informative video, information about the disease, map of health clinics, agenda function and anonymous notification. The evaluation of the objective, function and relevance was considered adequate with value higher than 0.80 in all items of the Content Validity Index. Final considerations: the application makes easier the routine of health services in the context of health promotion, in the convocation and treatment of pregnant women and their partners.

RESUMEN Objetivo: desarrollar y evaluar una aplicación para el control de la sífilis en gestantes. Método: Investigación metodológica desarrollada en el período de marzo a noviembre de 2016, en dos fases: levantamiento bibliográfico de los años 2012 a 2016 en las bases de datos PubMed, CAPES y Scopus y desarrollo de la aplicación. Participaron de la prueba de usabilidad ocho usuarios y de la evaluación cinco médicos y cinco enfermeras que actuaban en el prenatal. Resultados: la aplicación contiene vídeo informativo, información sobre la enfermedad, mapa de los puestos de salud, función de agenda y notificación anónima. La evaluación del objetivo, función y relevancia se consideró adecuada con un valor superior a 0,80 en todos los ítems del Índice de Validación de Contenido. Consideraciones finales: la aplicación facilita la rutina de los servicios de salud en el contexto de promoción de la salud, en la convocatoria y tratamiento de gestantes y sus parejas.

RESUMO Objetivo: desenvolver e avaliar um aplicativo para o controle da sífilis em gestantes. Método: pesquisa metodológica desenvolvida no período de março a novembro de 2016, em duas fases: levantamento bibliográfico dos anos de 2012 a 2016 nas bases de dados PubMed, CAPES e Scopus e desenvolvimento do aplicativo. Participaram do teste de usabilidade: oito usuários e da avaliação cinco médicas e cinco enfermeiras que atuavam no pré-natal. Resultados: o aplicativo contém vídeo informativo, informações sobre a doença, mapa dos postos de saúde, função de agenda e notificação anônima. A avaliação do objetivo, função e relevância foi considerada adequada com valor superior a 0,80 em todos os itens do Índice de Validação de Conteúdo. Considerações finais: o aplicativo facilita a rotina dos serviços de saúde no contexto de promoção da saúde, na convocação e tratamento de gestantes e seus parceiros.

Diagnóstico de lepra en niños mediante seguimiento serológico de anticuerpos contra el glicolípido fenólico I / Leprosy diagnosis in children by antibodies serologic follow up against the phenolic glycolipid I

Introducción: Los niños contactos de pacientes con lepra se consideran las personas con mayores posibilidades de desarrollar la enfermedad. Objetivo: Valorar la utilidad del seguimiento serológico de anticuerpos contra el glicolípido fenólico I para el diagnóstico de lepra en niños. Métodos: Investigación prospectiva. Se incluyeron todos los niños contactos de pacientes diagnosticados con lepra en las provincias de La Habana, Santiago de Cuba y Guantánamo entre enero 2013-junio 2015. Los menores se evaluaron clínicamente mediante examen dermatoneurológico y se determinó la presencia de anticuerpos contra el glicolípido fenólico I de Mycobacterium leprae para el estudio serológico. Los niños con serología positiva se siguieron, con estos dos métodos, cada seis meses durante dos años. La confirmación de un caso nuevo de lepra se realizó mediante baciloscopía y biología molecular. Resultados: Se estudiaron 151 niños, de ellos 44 (29,13 por ciento) resultaron positivos al glicolípido fenólico I. Se diagnosticaron durante el período 12 casos, de los cuales 11 tuvieron serología positiva. Presentaron sospecha clínica 10 niños de los estudiados, solo se confirmó un caso nuevo, el cual tuvo serología negativa. En ocho de los niños diagnosticados se detectó presencia de bacilos ácido alcohol resistente en la lámina de baciloscopía. En los restantes cuatro niños el diagnóstico se confirmó por la reacción en cadena de la polimerasa. Conclusiones: Los resultados de esta investigación denotan la utilidad del seguimiento serológico de anticuerpos contra el glicolípido fenólico I en el diagnóstico de lepra en niños, en apoyo a la vigilancia clínica(AU)

Introduction: Children having contact with leprosy patients are considered the contacts with greater possibilities of developing the disease. Objective: To assess the usefulness of antibodies´ serologic follow up against the phenolic glycolipid I (PGL-1) for the diagnosis of leprosy in children. Methods: Prospective study in which were included all children contacts of patients diagnosed with leprosy in Havana, Santiago de Cuba and Guantanamo provinces between January 2013 and June 2015. They were evaluated clinically by the dermato-neurological examination and the presence of antibodies against the PGL-1 of M. leprae was determined. Children with positive serology were followed up using these same two methods every six months for two years. The confirmation of a new case of leprosy was made by smear microscopy and molecular biology / PCR-Rlep. Results: A total of 151 children were studied. Of these, 44 children (29.13 percent) were positive for phenolic glycolipid I. A total of 12 children were diagnosed during this period, of which 11 had positive serology. Only 10 children of the studied ones presented clinical suspicion and of these only one new case was confirmed, which had negative serology. In eight of the diagnosed children, the presence of acid-fast bacilli was detected in the smear microscopy. In the remaining four children, the diagnosis was confirmed by the PCR result. Conclusion: The results of this investigation show the usefulness of the antibodies´ serologic follow up against the phenolic glycolipid I in the diagnosis of leprosy in children as a support to clinical surveillance(AU)

Surveillance of intradomiciliary contacts of leprosy cases: perspective of the client in a hyperendemic municipality / Vigilancia de contactos intradomiciliarias de lepra: perspectiva del usuario en municipio hiper endémico / Vigilância de contatos intradomiciliares de hanseníase: perspectiva do usuário em município hiperendêmico

ABSTRACT Objective: To characterize approach methods for intradomiciliary contacts (IdC) of leprosy cases resident in Northern Brazil, during 2001-2012. Method: A cross-sectional and descriptive study in the state of Rondônia. Included IdC of leprosy cases diagnosed/reported in SINAN-Ministry of Health (MS), 2001-2012. A semi-structured instrument was applied to the IdCs, with six interventions: complete dermatological examination; complete neurological examination; BCG vaccination; instructions for return to the health unit; BCG guidance; and guidance to mobilize other contacts. Results: From a total of 459 IdCs included, failure to perform the dermatological examination was reported by 191 people (41.6%) and the neurological examination, by 252 (54.9%); 138 (30.1%) did not have BCG indicated and 122 (26.6%) did not receive guidelines; 257 (56.0%) were not advised to return for a new evaluation/follow-up and 186 (40.5%) were not asked to mobilize other contacts. Conclusion: Despite the favorable indicators of IdC examination coverage in the state, the evaluation process presents patterns that indicate operational quality failures.

RESUMEN Objetivo: Caracterizar normas de abordaje de contactos intradomiciliarias(CId) de casos de lepra residentes en el Norte de Brasil, de 2001-2012. Método: Estudio transversal y descriptivo en el estado de Rondônia. Incluidos CId de casos de lepra diagnosticados/notificados en SINAN-Ministerio de Salud (MS), 2001-2012. Se aplicó instrumento semi estructurado a los CId verificándose 6 intervenciones: examen dermatológico completo; examen neurológico completo; vacunación BCG; orientación para retorno a la unidad de salud; orientación sobre BCG y orientación para movilizar otros contactos. Resultados: Fueron incluidos 459 CId. La no realización del examen dermatológico fue referida por 191 personas (41,6%) y el neurológico, por 252 (54,9%), 138(30,1%) no tuvieron la BCG indicada y 122 (26,6%) no recibieron orientaciones, 257 (56,0%) no fueron orientados a retornar para nueva evaluación/seguimiento y 186 (40,5%) no fueron orientados para movilización de otros contactos. Conclusión: A pesar de los indicadores favorables de cobertura de examen de CId en el estado, el proceso de evaluación presenta normas que indican fallos operacionales de cualidad.

RESUMO Objetivo: Caracterizar padrões de abordagem de contatos intradomiciliares (CId) de casos de hanseníase residentes no Norte do Brasil, de 2001-2012. Método: Estudo transversal e descritivo no estado de Rondônia. Incluídos CId de casos de hanseníase diagnosticados/notificados no SINAN-Ministério da Saúde (MS), 2001-2012. Aplicou-se instrumento semiestruturado aos CId verificando-se seis intervenções: exame dermatológico completo; exame neurológico completo; vacinação BCG; orientação para retorno à unidade de saúde; orientação sobre BCG e orientação para mobilizar outros contatos. Resultados: Foram incluídos 459 CId. A não realização do exame dermatológico foi referida por 191 pessoas (41,6%) e o neurológico, por 252 (54,9%); 138 (30,1%) não tiveram a BCG indicada e 122 (26,6%) não receberam orientações; 257 (56,0%) não foram orientados a retornar para nova avaliação/seguimento e 186 (40,5%) não foram orientados para mobilização de outros contatos. Conclusão: Apesar dos indicadores favoráveis de cobertura de exame de CId no estado, o processo de avaliação apresenta padrões que indicam falhas operacionais de qualidade.

Assessment of family and neighbors of an individual infected with Wuchereria bancrofti from a non-endemic area in the city of Maceió, Brazil

The family and neighbors of a patient infected with W. bancrofti microfilariae were assessed aiming to evaluate the occurrence of cases of lymphatic filariasis in a non-endemic area in the city of Maceió, in the Brazilian state of Alagoas. The patient had previously lived in an endemic focus; however, he has been living in an area where the parasite has never been detected for the past ten years. Female ingurgitated Culex quinquefasciatus mosquitoes captured in the houses of the microfilaremic individual and of his neighbors in the non-endemic region were also examined by polymerase chain reaction (PCR) technique. The thick blood smear examination, blood membrane filtration, and rapid immunochromatography (antigen search) revealed no infected individuals in the family of the microfilaremic individual. All 334 neighbors undergoing the thick blood smear examination were negative for W. bancrofti microfilariae. In 478 ingurgitated C. quinquefasciatus mosquitoes examined by PCR, no W. bancrofti DNA was detected. The microfilaremic individual had a microfilaremia considered very low according to WHO standards (4 microfilariae/mL of blood). As the vectorial infection depends on microfilaremia, the patient's low parasite load did not determine the contamination of other individuals in the area. Our data have shown that the long-term residence of the microfilaremic individual in the non-endemic region was not sufficient to start a new transmission focus of lymphatic filariasis in Maceió.

Factors associated with the household contact screening adherence of tuberculosis patients.

A cross-sectional study was conducted to explore factors associated with the adherence of tuberculosis patients in bringing their household contacts to a TB clinic in Bangkok, Thailand. During the study period, May to December 2003, 325 sputum-smear-positive tuberculosis patients were recruited into the study. Of the 325 eligible tuberculosis patients, 169 (52.00%, 95% Cl = 47.00-57.00) brought their household contacts to the TB clinic. Psychosocial and cues to action factors were examined as indicators of the household contact screening adherence of tuberculosis patients. The results reveal that the household contact screening adherence of tuberculosis patients was significantly associated with a higher perceived susceptibility (Adjusted OR = 2.90, 95% Cl = 1.18-7.16), lower perceived barriers (Adjusted OR = 4.60, 95% CI = 1.99-10.60), a higher intention to bring the contacts to the TB clinic (Adjusted OR = 3.35, 95% Cl = 1.44-7.76), and a short distance from home to the TB clinic (Adjusted OR = 11.47, 95% Cl = 4.57-28.79). The results from this study provide information for TB clinic staff for developing an appropriate intervention program. Through effective intervention and active policy enforcement, a higher percentage of household contact screening adherences can be achieved.

A percepçao dos comunicantes intradomiciliares de doentes de hanseniase sobre a doença, o convivio com o doente e o controle realizado pelo serviço de saude / ?

O objetivo desta investigaçao foi identificar, descrever e analisar a percepçao dos comunicantes intradomiciliares de doentes de hanseníase sobre a doença, o convívio com o doente e o controle realizado pelo serviço de saude. Optou-se pela abordagem de natureza qualitativa. A populaçao do estudo constitui-se de 19 comunicantes intradomiciliares cadastrados na unidade de saude onde sao desenvolvidas açoes do Programa de Eliminaçao da Hanseniase no municipio de Fernandopolis/SP. Os instrumentos utilizados para coleta de dados foram: o prontuario do doente, o formulario e a entrevista semi-estruturada, com tres questoes norteadoras. Para a analise dos dados qualitativos utilizou-se a tecnica de Analise de Conteudo, modalidade Tematica. Tres unidades tematicas foram conformadas a partir dos nucleos de sentido: 1ª) A doença hanseniase – a percepçao dos comunicantes intradomiciliares (a relaçao da hanseniase com a lepra e hanseniase: de doença desconhecida ao conhecimento da classificaçao, aspectos clinicos, epidemiologicos e terapeuticos sobre a doença); 2ª) O convivio com o doente – a percepçao dos comunicantes intradomiciliares (a convivencia com o doente: normalidade, dificuldades e contradiçoes; as atitudes dos comunicantes no convivio com o doente; a percepçao dos sofrimentos durante o convivio e o estigma e o preconceito); e 3ª) O controle realizado pelo serviço de saude – a percepçao dos comunicantes intradomiciliares (as açoes do programa de controle de eliminaçao da hanseniase desenvolvidas pela unidade de saude e a atençao recebida pelo serviço de saude). Os resultados apontam que os comunicantes intradomiciliares de doentes de hanseniase participam do processo de adoecimento, incorporando conhecimentos sobre a doença, atribuindo-lhe significados de acordo com seus valores, atitudes e crenças; compartilham dos problemas dos doentes e procuram ajudá-los em suas necessidades e, ainda, percebem o controle que o serviço de saude realiza sobre eles e os doentes dentro de um quadro de referencia pautado pela satisfaçao no atendimento. Constatou-se também a necessidade da valorização da vigilancia dos contatos em outras perspectivas, alem da epidemiologica, de forma a contemplar outras dimensoes da vida desses sujeitos....

Controlling tuberculosis: we can't do it if we don't find the cases

The current international strategy for the control of tuberculosis emphasizes two different targets: a high success rate for the treatment of tuberculosis cases with an emphasis on positive sputum smear cases and a high case detection rate. Recent analyses indicate that while progress is being made towards successful treatment, targets for case-finding are not being achieved