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An Epidemiologic Study of Pinta in Mexico

With the purpose of contributing to the knowledge of the epidemiology of pinta, a survey was made by interview and physical examination of the total population of a village called Apango, in the State of Guerrero, Mexico. This town is situated in a pinta-affected area.

Among the 2,110 inhabitants, 37.4% had pinta. The age specific morbidity rates per 100,000 population increased progressively from 1,900 in the age group 0 to 4 years to 75,500 in the 60 years and older group. The disease attacked all ages.

In the wives, as well as in the children, a marked relationship was found between the occupation of the head of the family, farmer or agricultural worker, and the prevalence of the disease. It was highest in the agricultural workers and their families. The presence of the disease in the parents was an important factor in the frequency of the disease in the children.

The data pointed to pinta as an infection contracted as a consequence of factors intimately related to the familial household and to the presence of pintous adults in the family.