Trends in the prevalence of COVID-19 infection in Rio Grande do Sul, Brazil: repeated serological surveys

Ciência & saúde coletiva
Pedro Curi HallalC G Victora

Abstract

COVID-19, the disease produced by the virus SARS-CoV-2, has spread quickly throughout the world, leading the World Health Organization to first classify it as an international health emergency and, subsequently, declaring it pandemic. The number of confirmed cases, as April 11, surpassed 1,700,000, but this figure does not reflect the prevalence of COVID-19 in the population as, in many countries, tests are almost exclusively performed in people with symptoms, particularly severe cases. To properly assess the magnitude of the problem and to contribute to the design of evidence-based policies for fighting COVID-19, one must accurately estimate the population prevalence of infection. Our study is aimed at estimating the prevalence of infected individuals in the state of Rio Grande do Sul, Brazil, to document how fast the infection spreads, and to estimate the proportion of infected persons who present or presented symptoms, as well as the proportion of asymptomatic infections. Four repeated serological surveys will be conducted in probability samples of nine sentinel cities every two weeks. Tests will be performed in 4,500 participants in each survey, totaling18,000 interviews. Interviews and tests will be conducted at the partic...Continue Reading

References

Jul 10, 1993·Lancet·C G Victora

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Citations

Jul 10, 2020·Nature Medicine·Mariângela F SilveiraCesar G Victora
Sep 3, 2020·Ciência & saúde coletiva·Pedro Curi Hallal
Jan 22, 2021·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Jessica Klöckner KnorstThiago Machado Ardenghi
May 20, 2021·Cadernos de saúde pública·Leonardo Pozza Dos SantosDebora da Cruz Payão Pellegrini
Mar 18, 2021·International Journal of Paediatric Dentistry·Bruna BrondaniThiago Machado Ardenghi
Jun 5, 2021·Emerging Infectious Diseases·Marcelo Rodrigues GonçalvesBruce B Duncan
Jan 5, 2022·Journal of Physical Activity & Health·Luiza Isnardi Cardoso RicardoInácio Crochemore-Silva

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