News Digging > Popular > Smallpox used to kill millions of people every year. Here’s how humans beat it.
Smallpox used to kill millions of people every year. Here’s how humans beat it.
Smallpox used to kill millions of people 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 of people 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.