- Around 7% of India’s adult population may have been exposed to the coronavirus till the last fortnight of August, according to the second national sero-survey by the Indian Council of Medical Research (ICMR).
- This is roughly a 10-fold jump in numbers from the first sero-survey conducted by the Council across 70 districts in 21 States that sought to estimate the likely number of infected until early May.
- Sero-surveys are conducted by drawing blood samples and checking for a specific class of antibodies called IgG that appear within two weeks of an infection.