Antibodies from Sinovac's Covid-19 vaccine decline after about six months, booster helps
PETALING JAYA (July 27): Third booster shot of Covid-19 vaccine could help to increase immune response as a finding showed that antibodies induced by CoronaVac, a Covid-19 vaccine developed by China's Sinovac Biotech, declines below a key threshold about six months after the recipients took the second dose, reported Reuters.