Post by: AngelOfThyNight on July 10, 2018, 11:03:40 PM
If polio is near extinction, why do outbreaks still pop up in places where the disease was thought to be long gone? The answer is complicated.
Source: Why polio outbreaks keep coming back (http://rss.cnn.com/~r/rss/cnn_topstories/~3/8Y5xezMm7U8/index.html)