Sinovac booster shot reverses drop in antibody activities against COVID-19 Delta variant, says study Reuters Sep 7, 2021 Several countries which have relied heavily on the Sinovac vaccine have begun giving booster shots developed by Western…
Brazil health regulator suspends use of 12 million Sinovac vaccine shots Reuters Sep 6, 2021 Anvisa said it was alerted recently by Sao Paulo's Butantan institute that 25 batches, or 12.1 million doses, sent to Brazil had…
