[Retrospective study of 1,934 cases of strongyloidiasis in Paris (1970-1986). II. Diagnosis, Eosinophilia. Treatment].

The best methods of detection of strongyloidiasis were by "combined concentrations" described in 1965 and 1972: a faecal sample was concentrated with or without ether, then floating. Baermann's extraction was positive in only 80% of the cases. The average blood eosinophilia was higher in Europeans (16.4%) than in subjects from intertropical countries (13.4%). In West Indians; it was higher in cases of strongyloidiasis than in ankylostomiasis (9.4%) and intestinal bilharziasis (8.3%). Treatment with thiabendazole: overall efficacy in 621 patients was 89%. The most effective dosage (97%) with the lowest dose was 4 g in adults, taken in two doses, one in the evening and the other the next morning.