The Centre on Tuesday announced the findings of the fourth seroprevalence study conducted by the Indian Council of Medical Research (ICMR). According to the survey, which also included kids over the age of 6, nearly one-third of the country's population is still vulnerable to Covid-19 infection.

from Times of India https://timesofindia.indiatimes.com/india/40-crore-indians-still-vulnerable-to-covid-details-of-icmrs-4th-sero-survey/articleshow/84583067.cms