Results: 42

COVID-19: a meta-analysis of diagnostic test accuracy of commercial assays registered in Brazil

Braz. j. infect. dis; 24 (2), 2020
ABSTRACT The accuracy of commercially available tests for COVID-19 in Brazil remains unclear. We aimed to perform a meta-analysis to describe the accuracy of available tests to detect COVID-19 in Brazil. We searched at the Brazilian Health Regulatory Agency (ANVISA) online platform to describe the pooled...

Sensitivity of the Wondfo One Step COVID-19 test using serum samples

Clinics; 75 (), 2020

Sequential serological surveys in the early stages of the coronavirus disease epidemic: limitations and perspectives

Abstract INTRODUCTION: Estimates of the number of individuals infected by severe acute respiratory syndrome coronavirus 2 are important for health planning and establishment of expectations regarding herd immunity. METHODS: Seven testing rounds of a serological survey were conducted at 1-week interval...

Getting to Know SARS-CoV-2: Towards a Better Understanding of the Factors Influencing Transmission

Abstract In November 2002, a virus known as SARS-CoV was identified in Guangdong, China, and it was implicated as the etiology of severe acute respiratory syndrome. Seventeen years later, in the same month of November, a similar disease with more dramatic outcomes was identified in neighboring Wuhan. It ...

Low risk of serological cross-reactivity between dengue and COVID-19

Mem. Inst. Oswaldo Cruz; 115 (), 2020
In the near future, the overlap of Coronavirus disease 2019 (COVID-19) and dengue epidemics is a concrete threat in tropical regions. Co-epidemics of COVID-19 and dengue could be an overwhelming challenge for health systems in low- and middle-income countries. In this work, we investigated potential sero...

Seroprevalence of anti-SARS-CoV-2 among blood donors in Rio de Janeiro, Brazil

ABSTRACT OBJECTIVE To estimate the seroprevalence of antibodies to SARS-CoV-2 among blood donors in the state of Rio de Janeiro, Brazil. METHODS Data were collected on 2,857 blood donors from April 14 to 27, 2020. This study reports crude prevalence of antibodies to SARS-CoV-2, population weighted prev...

Vacunas para la COVID-19: capacidad de producción y distribución e implicaciones económicas y políticas. Síntesis rápida.
Vaccines for COVID-19: production, distribution capacity, and economic and political implications. Rapid living synthesis

A pesar de los 58.5 millones de casos notificados hasta ahora en el mundo, la mayor parte de la población sigue siendo susceptible a la infección, con un importante número de estudios de seroprevalencia reportando un bajo porcentaje de anticuerpos contra el SARSCoV-2, en un rango entre 1.0% y 10.8% (1...

Evolução da prevalência de infecção por COVID-19 no Rio Grande do Sul, Brasil: inquéritos sorológicos seriados

Ciênc. Saúde Colet. (Impr.); 25 (supl.1), 2020
Resumo A COVID-19 é uma doença produzida pelo vírus SARS-CoV-2. Esse vírus se espalhou rapidamente pelo mundo, o que levou a Organização Mundial da Saúde a classificar a COVID-19 como uma emergência de saúde internacional e, posteriormente, a declará-la uma pandemia. O número de casos confirma...

EPICOVID19 protocol: repeated serological surveys on SARS-CoV-2 antibodies in Brazil

Abstract The first case of COVID-19 was reported in China in December 2019, and, as the virus has spread worldwide, the World Health Organization declared it a pandemic. Estimates on the number of COVID-19 cases do not reflect it real magnitude as testing is limited. Population based data on the proporti...