Over 14pc in Kolkata have COVID-19 antibodies: ICMR seroprevalence survey

Over 14 per cent of Kolkata residents have developed COVID-19 antibodies, a seroprevalence survey by Indian Council of Medical Research has said.

A seroprevalence survey conducted via random and rapid tests -- IgM and IGg -- indicate rate of transmission in a community and wher it has started developing herd immunity to a virus.

survey was conducted on basis of random samples but sample size was t mentioned.

According to senior doctors, survey indicated that transmission is high in metropolis, which is far from developing herd immunity or antibodies to combat COVID-19.

In neighbouring South 24-Parganas district, it is 2.5 per cent while it is 1 per cent in Alipurduar district, survey said.

re has been less than 1 per cent of antibody positivity rates in districts of Purba Medinipore, Bankura and Jhargram, survey stated.

Antibody is a protective protein produced by immune system in response to presence of a foreign substance, an antigen. In this case it is new coronavirus, SARS-CoV-2. 

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