Experts puzzled by dramatic fall in coronavirus cases in India

When the coronavirus pandemic took hold in India, there were fears it would sink the fragile health system of the world’s second-most populous country.

But infections began to plummet in September, and now the country is reporting about 11,000 new cases a day, compared with a peak of nearly 100,000, leaving experts perplexed.

Experts have suggested many possible explanations for the sudden drop – seen in almost every region – including that some areas of the country may have reached herd immunity or that Indians may have some pre-existing protection from the virus.

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