Are there still Polio Epidemics?
History:
Polio is a contagious, historically devastating disease that was virtually eliminated from the Western hemisphere in the second half of the 20th century. Although polio has been around since ancient times, its longest outbreak happened in the first half of the 1900s until the polio vaccine was made in 1955. At the top of the polio epidemic in 1952, nearly 60,000 cases with more than 3,000 deaths were reported in the United States alone. However, with widespread vaccination, polio occurring through natural infection, was eliminated from the United States by 1979 and the Western hemisphere by 1991. The Poliovirus is actually most common in rural areas and undeveloped areas because of the unclean atmosphere.
Recent News
As of September 2012 there were only 3 countries left in which Polio was still present, Nigeria, Afghanistan and Nigeria.