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Two-thirds of India’s population, or over 900 million people, have antibodies to Covid-19, implying prior infections or possible protection, a nationwide survey has indicated, prompting some experts to predict that a third wave could be unlikely without fresh mutations in the virus. The survey has found that 67.6 per cent of a sample of 28,975 individuals aged six years or older from 70 districts across 21 states had antibodies against SARS-CoV-2, the virus that causes Covid-19, implying possible protection, either from prior infections or vaccination. Advertisement The findings suggest that the fraction of the country’s population possibly protected from Covid-19 infections has ballooned from 24.1 per cent in January 2021 to over 67.6 per cent by July 2021. But the results also imply that over 400 million of India’s 1.3 billion population are still vulnerable to the infection.

Tamil naduVinod paulT jacob johnBalram bhargavaNational institute of epidemiologyChristian medical collegeIndian council of medical researchIndian councilMedical researchதமிழ் நாடுவினோத் பால்டி ஜாகோப் ஜான்பால்ராம் பார்கவாதேசிய நிறுவனம் ஆஃப் தொற்றுநோய்கிறிஸ்துவர் மருத்துவ கல்லூரிஇந்தியன் சபை ஆஃப் மருத்துவ ஆராய்ச்சி