Rohtak (Haryana), Nov 19 (ANI): Vice-Chancellor of Pt BD Sharma University of Health Sciences, (Rohtak), OP Kalra during a press conference on November 18 said that the third phase of Covaxin will start from November 20. OP Kalra said, “Third phase trial of Covaxin to start from 20 Nov. 200 volunteers to be administered the vaccine early to study its anti-bodies response. There will be 2 doses; 2nd dose to be given 28 days after the first dose. Vaccine's efficacy is expected to be more than 90%.”