Rodrigo Fabiano do Carmo Said

TL;DR: It is shown that the age and sex distribution of human cases is characteristic of sylvatic transmission, which establishes a framework for monitoring YFV transmission in real time that will contribute to a global strategy to eliminate future YFFV epidemics.

TL;DR: In this paper, the authors estimate the effectiveness of the inactivated whole virus vaccine, CoronaVac, against symptomatic covid-19 in the elderly population of Sao Paulo state, Brazil during widespread circulation of the gamma variant.

TL;DR: In this paper, the authors performed a matched test-negative case-control study to estimate the effectiveness of an inactivated vaccine, CoronaVac, in healthcare workers (HCWs) in Manaus, where the Gamma variant accounted for 86% of genotyped SARS-CoV-2 samples at the peak of its epidemic.

TL;DR: A homologous CoronaVac booster dose provided limited additional protection, while a BNT162b2 booster dose afforded sustained protection against severe disease for at least three months.

TL;DR: In this article, the effectiveness of the two-dose Covid-19 vaccine schedule was evaluated in elderly populations in countries with high prevalence of the Gamma variant of SARS-CoV-2.