Covaxin 'effectively' neutralizes Alpha and Delta variants of COVID-19: America's NIH Vishal Singh Tuesday, 29 June 2021 Facebook Twitter The Alpha and Delta variants of COVID-19 were first identified in the United Kingdom and India, respectively. from Zee News :World https://ift.tt/2UTzE95 LihatTutupKomentar Post Selanjutnya Post Sebelumnya