One in 4 in Kolkata has antibodies: Sero survey

A sero-positivity survey carried out by a private laboratory has indicated that 26% of Kolkata’s population and 23% of Bengal’s population may have already developed Covid antibodies, indicating they have been exposed to the virus, developed immunity and were thereby likely to act as a shield for the rest. The national sero-positivity rate, according to the survey carried out in July-August, stands at 27%.

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