Brazil's Sao Paulo state confirms 78% efficacy of Sinovac's COVID-19 vaccine

Brazil's Sao Paulo state government confirmed on Thursday that late-stage trials of Sinovac Biotech's COVID-19 vaccine showed efficacy of 78%, according to remarks by Governor João Doria in a news conference on Thursday.

Doria also said state-run biomedical institute Butantan had requested permission for emergency use of the vaccine, known as CoronaVac, from federal health regulator Anvisa.

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