Smallpox was a serious problem in the 20th century. The World Health Organization declared in 1979 that smallpox was no longer a danger to the world's population. The aim has been to "silence" other diseases. It was hoped that polio could also be eradicated, but a stubborn region for this has remained in Pakistan. More cases were identified in Pakistan than in any other country in 2011. The Edhi Foundation, a major charity, and the Pakistan government are working with the Global Polio Eradication Initiative to target the disease. Cases have fallen so that now Nigeria is the main trouble spot. There are fears that the progress could be short lived and figures could rise again. Polio spreads far more easily than smallpox. The smallpox vaccine lasts for five years and is very effective. For the war on polio to be won, just about every person must be vaccinated. As the disease can only spread from person to person this goal must be achieved. http://www.adventure--aus...
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