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Continue with precautions to avoid next corona wave

Dr Hemalata Arora, Senior Consultant, Infectious Diseases & Internal Medicine, Nanavati Max Super Specialty Hospital, said: “It seems that we have developed some amount of herd immunity. But it’s difficult to estimate the exact percentage as it varies with the location, based on multiple factors such as active and past patient count, people movement, access to timely healthcare, infection awareness, etc. Multiple surveys of the Indian Council of Medical Research (ICMR) have yielded similar results. Moreover, herd immunity is determined by studying the antibody count of a group of individuals and while at times the antibody test may not detect enough antibodies for a ‘positive’ result, the person may have sufficient antibodies to fight off the infection. Thus, the concept of herd immunity in Covid infection is not very clearly understood, but it’s likely to be the reason for the drop in new cases.”

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