According to a study, breakthrough cases and Covid-19 recovered individuals with one or two doses of vaccine have relatively higher protection against Delta variant compared to those administered either one or two doses of Covishield.from Top India News- News18.com https://ift.tt/3dF8Sbc
According to a study, breakthrough cases and Covid-19 recovered individuals with one or two doses of vaccine have relatively higher protection against Delta variant compared to those administered either one or two doses of Covishield.