Polio cases found in Syria

In 1988, there were about 345,000 cases of polio globally. Polio was virtually eradicated in all but three nations by 2012, when 223 cases were registered. Read related article.

A look at the history of the polio inoculation program.
Sources: Centers for Disease Control and Prevention, the World Health Organization. Richard Johnson/The Washington Post. Published on October 29, 2013, 4:42 p.m.
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