No need to mix two COVID jabs: Serum Institute chairman Poonawalla against using cocktail of vaccines Nation No need to mix two COVID jabs: Serum Institute chairman Poonawalla against using cocktail of vaccines News Analysis India 3 years ago By PTI PUNE: Serum Institute of India (SII) chairman Dr Cyrus Poonawalla on Friday said he was not in favour of administering two different...Read More