Doses given 2-3 months apart are more effective, says SII's CEO Adar Poonawalla
CEO of Serum Institute of India, Adar Poonawalla said if a gap of 2-3 months is kept between the first and second dose then the efficacy of Covishield increases to up to 90%. And if the gap is increased for other vaccines it will yield similar results. In March, India decided to increase the interval between the two shots to 8 weeks on the recommendation by the National Expert Group.