Explained: What exactly is herd immunity
News: A recent serological survey in Delhi found the presence of coronavirus specific antibodies in about 23% of the samples tested.The results of the survey are being interpreted to suggest …
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National community-based sero-survey to estimate prevalence of SARS-CoV-2 infection
Facts: Sero Survey: It involves testing the blood samples of a group of individuals to monitor trends in prevalence of the novel coronavirus or SARS-COV-2 infection at the district level. …
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