
Sinovac booster shot reverses drop in antibody activities against Covid-19 Delta variant: Study, China News
Sinovac booster shot reverses drop in antibody activities against Covid-19 Delta variant: Study, China News,BEIJING – A booster dose of Sinovac Biotech's Covid-19 vaccine reversed a decline in antibody activities against the Delta variant, a study showed, easing some concerns about its longer-t