4:13 PM 2/1/2021 Covid-19 Rates in India M.N.: My hypothesis and explanation: 1. Sars-Cov-2 was present in India, just like everywhere else, for quite some time, probably for decades if not longer. It was and is largely asymptomatic, and the populace developed the adequate immunity to it: Quote: Serological surveys – random testing for antibodies – show a majority of people in certain areas of India may have already been exposed to the coronavirus, without developing symptoms. Last week, preliminary findings from a fifth serological study of 28,000 people in India's capital showed that 56% of residents already have antibodies , though a final report has not yet been published. The numbers were higher in more crowded areas. Last summer, another survey by Mumbai's health department and a government think tank found that 57% of Mumbai slum-dwellers, and 16% of people in other areas, had antibodies suggesting prior exposure to the coronavirus. 2. Bacteria and viruses compet