With a fatality rate of approximately 30%, smallpox claimed over 300 million lives in the 20 th century, more than three times the lives lost in both world wars combined. ... reduce the severity of ...

Smallpox was eradicated in 1977. This amazing, global public health achievement isn’t just a page in a history book or an ...

"Vaccines prevent outbreaks, they build immunity and herd community infrastructure," according to Dr. Zahra Shajani ...