The Covaxin has not yet had Phase 3 trials. Approval was premature and could be dangerous. @drharshvardhan should please clarify. Its use should be avoided till full trials are over. India can start with the AstraZeneca vaccine in the meantime. https://t.co/H7Gis9UTQb

— Shashi Tharoor (@ShashiTharoor) January 3, 2021