Why we have cows to thank for the eradication of smallpox - Hindustan Times

We're fortunate to live in a world free from smallpox. Here's how the disease was eradicated. | Health

We're fortunate to live in a world free from smallpox. But how was the disease eradicated? A look at the remarkable story. May 8, 1980, marked the day of one of science's greatest achievements: The … [+6360 chars]

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