Correct Answer : Antibodies
As per the Sero survey conducted by the Council for Scientific and Industrial Research (CSIR), the recurrence of coronavirus outbreak in March could be due to lack of meaningful antibodies in seropositive people after a peak in September 2020.
The CSIR conducted a sero-survey on 10,427 people from 17 states and two union territories. The average sero positivity was 10.14 per cent, among the sample people.
