[Parasitologic study of feces: simultaneous performance of Faust's, Janecko-Urbanyi's and Ritchie's concentration technics]. / Examen parasitologique de selles: réalisation simultanée des techniques de concentration de Faust, de Janeckso-Urbanyi et de Ritchie.

The authors propose the simultaneous use of Faust's, Janeckso-Urbanyi's and Ritchie's techniques according to a protocol which combines the effectiveness of the three techniques, with a saving in reagents, a significant simplification of the manipulations (a single dilution of the stools, a single straining and a total of three centrifugations) and the possibility of conducting valid comparative studies, as the three techniques are performed from the same faecal aqueous suspension.

[Parasitic infestation and haemoglobinopathies in a population of 1170 refugees from South East Asia]. / Parasitoses et hémoglobinopathies chez 1 170 réfugiés du Sud-Est asiatique.

One thousand one hundred and seventy refugees from Cambodia, Laos and Vietnam were examined in the north of France from 1976 to 1980. 58% of them carried digestive parasites, 22% had anti-Plasmodium antibodies and 2% showed circulating Plasmodium. The most frequent parasites were hookworms (28%), Opisthorchiidae (15%) and Giardia intestinalis (12%). Strongyloides stercoralis (5,7%), Entamoeba histolytica (4,5%), tapeworms (3,3%), human coccidia (1,3%) and Trichostrongylus sp. (1%) were less frequent. Four cases of japonicum schistosomiasis were diagnosed by rectal biopsy. Three species of Plasmodium were identified: P. falciparum (10 cases), P. vivax (3 cases) and P. malariae (2 cases). 16% of the refugees displayed E haemoglobin (Hb E). The occurrence of parasitic infestation and Hb E were more frequent in Cambodians and Laotians than in Vietnameses. Specific anti-P. falciparum antibodies were observed with a significant higher frequency in patients carrying Hb E.