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  1. Fulltext. Seroepidemiology of schistosomiasis in Puerto Rico : Evidence for vanishing endemicity.

    Article - En anglais


    The current study summarizes our findings of anti-schistosome egg antibody by the circumoval precipitin test for two different populations in Puerto Rico.

    One group, exclusively males more than 40 years of age and from all municipalities on the island, was from the Veterans Administration Hospital for the period 1988-1997.

    The second group resided southeast of San Juan, around the municipality of Caguas and adjacent municipalities east of Caguas, was of both sexes and mostly until 1997 of undetermined ages for the period 1993-1997.

    Results reveal a yearly decrease in testing requests from the Veterans Administration Hospital from 148 in 1988 and 1989 with 16% positive to three in 1996 through 1998 with none positive.

    This decrease in testing requests was because of a decrease of suspicion of schistosomiasis in this group.

    The other patient population from the Caguas region showed a gradual but continuous decrease in seropositive individuals from 21% in 1993 to 12% in 1996, with precipitous decrease to 5% in 1997 and only 1% in 1998.

    Moreover, there were four patients from which at least two serum samples were obtained one or two years apart and tested.

    In each instance the more recently obtained sample had lower antibody reactions than the first as reflected in lower percentages of positive egg reactors.

    The fact that they were treated with praziquantel after the first testing also suggests that the infected population was being eliminated through chemotherapy. (...)

    Mots-clés Pascal : Schistosomiase, Trématodose, Helminthiase, Parasitose, Infection, Epidémiologie, Sérologie, Homme, Porto Rico, Antilles, Amérique Centrale, Amérique

    Mots-clés Pascal anglais : Schistosomiasis, Trematode disease, Helminthiasis, Parasitosis, Infection, Epidemiology, Serology, Human, Puerto Rico, West Indies, Central America, America

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0318188

    Code Inist : 002B05E03C1. Création : 16/11/1999.