Smallpox used to kill millions every year. Here’s how humans beat it: More contagious than Covid-19 and with a 30 percent mortality rate, smallpox was one of history’s biggest killers. Now it’s gone.

Smallpox used to kill millions every year. Here’s how humans beat it: More contagious than Covid-19 and with a 30 percent mortality rate, smallpox was one of history’s biggest killers. Now it’s gone.
Smallpox used to kill millions every year. Here’s how humans beat it: More contagious than Covid-19 and with a 30 percent mortality rate, smallpox was one of history’s biggest killers. Now it’s gone. submitted by /u/shallah
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https://ift.tt/alXd8yN May 20, 2022 at 01:49AM https://ift.tt/QyPj7ox
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