Santiago, 6 abr (EFE).- A CoronaVac, vacina do laboratório chinês Sinovac, tem eficácia de 54% e evitou um quadro pior no aumento diário de novos casos de covid-19 que o Chile vem experimentando nos últimos dois meses, de acordo com um estudo publicado nesta terça-feira.
Fonte: Uol Tecnologia
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