The content originally appeared on: Trinidad and Tobago Newsday News FILE PHOTO: A vial of the Sinopharm vaccine. - BOOSTER shots can increase by ten-fold the number of antibodies in someone's body to fight covid19 infection, the China Sinopharm International Corporation said in a statement on Monday, following a local media story on Sunday questioning the vaccine's general efficacy. Sinopharm said, 'Based on the current research progress, many countries have started inoculating booster shots to maintain and improve the protective […]