BEIJING: Antibodies triggered by Sinovac Biotech’s Covid-19 vaccine declined below a key threshold from around six months after a second dose for most recipients, but a third shot had a strong booster effect, a lab study showed.
Chinese researchers reported the findings from a study of blood samples from healthy adults aged between 18-59 in a paper which has not been peer reviewed.
Participants who received a third dose of the Sinovac shot about six months after the second showed around a 3-5 fold increase in antibody levels after a further 28 days, compared with the levels seen four weeks after the second shot. | Reuters…
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Cape Times (Digital) - 1 Issue, 2021-07-28