Health
Early observations show good results of mass vaccination in Brazilian town – CGTN
Almost 98 percent of the adult population of Serrana was vaccinated in an experiment to test the efficacy of the Chinese-made CoronaVac vaccine.

Almost 98 percent of the adult population of Serrana, Brazil was vaccinated in an experiment to test the efficacy of the Chinese-made CoronaVac vaccine.
A scientific experiment is bringing hope to a small town in Brazil, one of the countries hardest hit by the COVID-19 pandemic. While less than 8 percent of the country as a whole has been vaccinated against the virus, the town of Serrana, in the countryside of São Paulo state, is almost fully vaccinated in the framework of an efficacy study of the…
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