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Why is Delhi conducting another serosurvey — and who will be tested?

(Express photo: Abhinav Saha) A blood sample is collected during the serosurvey in Delhi. On Saturday (August 1), Delhi initiated a second serological survey across the 11 districts of the capital to estimate the percentage of the population that could have developed antibodies against the novel coronavirus. The survey reported a seropositivity rate of 22.86% for IgG antibodies — which implied that one in every five individuals surveyed had been exposed to the novel coronavirus that causes Covid-19.

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