Schistosomiasis is a problem of increasing importance when viewed on a world-wide scale. It is a serious problem in Africa and South America, especially in Brazil where the expanding population carries the disease with it into previously unsettled territory. In certain cities of the continental United States, such as New York, schistosomiasis has become important even though transmission does not occur. This is so because of the large number of inhabitants who come from the Caribbean Islands, especially Puerto Rico. Since approximately 10% of the people of Puerto Rico are infected with Schistosoma mansoni1,2 and since more than 500,000 persons born in Puerto Rico reside in New York, it is estimated that there are more than 50,000 individuals with S. mansoni infection in that city alone. There were 8 deaths in New York from advanced schistosomiasis in the 3-year period from 1956-1958.
Schistosoma mansoni is a blood fluke, the definitive
EINHORN A, FRITSCH A, DWORK KG, SHOOKHOFF HB. Schistosoma Mansoni Infection in Children: Treatment with Lucanthone Hydrochloride (Nilodin). Am J Dis Child. 1962;104(1):30–35. doi:10.1001/archpedi.1962.02080030032005
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