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Throughout the world polio us present every year, but there was a major outbreak of polio in 1955 in North America. Polio is still present in the world although it is generally not a problem in Western countries. The virus may be endemic (everyone has it) in some countries although only 10% of the population show symptoms. The virus is spread by fecal contamination of food or water or by mouth to mouth contact.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe first major polio epidemic was reported in the United States, in 1894.
Wiki User
∙ 10y agoPolio was very common in the USA until vaccines were developed in 1952 and early 1960s.
Wiki User
∙ 12y agoAround 1952
Anonymous
1955
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