The initial order was some of locally filled-and-finished CoronaVac vaccine.
Tong Kai Sing, vice president of the Association of Licentiates of Medical Council of Hong Kong, agrees with Feng and blamed some Hong Kong media for sensationalizing the issue.
Neutralizing antibody titers induced by the 3·0 μg dose were higher than those of the 1·5 μg dose.
But does this really mean Sinovac is tried and tested and therefore safer? Still, participants had significantly reduced neutralization antibodies against Omicron compared with those produced against the Delta variant, suggesting a greater risk of vaccine breakthrough infections, the researchers warn.
It has an efficacy rate of for preventing symptomatic infection, according to data from a Brazilian trial, and an effectiveness of , according to a real-world study in Chile.
It was conducted by researchers from Hebei Provincial Center for Disease Control and Prevention, Sinovac Biotech Ltd, National Institutes for Food and Drug Control, Zanhuang County Center for Disease Control and Prevention, Beijing Key Tech Statistics Technology Co.