4th Round of National Sero-Survey

Two third of the general population had SARS-CoV-2 antibodies. A third of population did not have antibodies (Still ~ 40 crores vulnerable)

States/districts/areas without antibodies run the risk of infection waves

DG, @ICMRDELHI pic.twitter.com/ewmxuftRBH

— PIB India (@PIB_India) July 20, 2021