Each batch of Covaxin undergoes over 200 tests, says Bharat Biotech over quality concerns Nation Each batch of Covaxin undergoes over 200 tests, says Bharat Biotech over quality concerns News Analysis India 3 years ago Express News Service NEW DELHI: Bharat Biotech on Thursday clarified that Covaxin supplied for the country’s Covid vaccination drive came only from its Hyderabad...Read More