Abstract
A house-to-house survey was carried out to determine the prevalence of poliomyelitis. During the survey 37,219 households were visited and 17,941 children 5-9 years old were found. Of 231 lame children, lameness compatible with paralytic poliomyelitis was found in 131, of these 91\% had their condition before the age of 3 years. Nineteen percent needed a stick support for walking while 12\% were unable to walk even with support. This problem was more common in rural populations. The prevalence of paralytic poliomyelitis was 7.3/1,000 children 5-9 years old.
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