Congress leader Shashi Tharoor on January 3 said that the emergency approval to Covid-19 vaccine Covaxin is premature and could be dangerous. He called it premature, as it is still under phase 3 trial. He urged Union Health Minister Dr Harsh Vardhan to wait till full trials of the vaccine are completed. Taking to Twitter, Tharoor said, “The Covaxin has not yet had Phase 3 trials. Approval was premature and could be dangerous.” He further urged Union Health Minister Dr Harsh Vardhan to avoid Covaxin till full trials are over.