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PubMed1987

[Human intestinal parasites in Subsaharan Africa. I. Eastern Boè and Canhabaque Island (Guinea-Bissau)].

A coprological survey was carried out in 1982-1983 in East Boè and in Canhabaque Island, (Bijagòs Islands), where 289 and 288 specimens of stools, respectively, have been collected. The samples were taken from apparently healthy subjects, of both sexes and of different age groups. The tests were made according to the modified Ritchie technique. The following results were obtained: A) East Boè: 1) Protozoa: E. coli 68.9%, E. nana 24.6%, G. intestinalis 8.7%, I. buetschlii 5.9%, E. histolytica 1.7%, E. hartmanni 0.7%, T. intestinalis 0.7%. b) Helminths: Ancylostomatidae 69.2%, T. trichiura 38.4%, S. stercoralis 6.2%, Taenia sp. 1.7%, H. nana 0.7%, S. haematobium 0.7%, S. mansoni 0.7%, S. fuelleborni 0.7%. B) Canhabaque: a) Protozoa: E. coli 85.1%, I. buetschlii 14.9%, E. nana 12.5%, G. intestinalis 8.3%, C. mesnili 7.3%, E. hartmanni 1.4%, E. histolytica 1.0%, T. intestinalis 0.4%. b) Helminths: Ancylostomatidae 87.9%, T. trichiura 9.4%, S. stercoralis 7.9%, S. fuelleborni 2.8%, Trichostrongylus sp. 1.4%, A. lumbricoides 0.7%, H. nana 0.4%. Eggs of Capillaria sp. probably pseudoparasites, were found in 8.7% of samples. The high prevalence of Ancylostomatidae infections appears to be related to the heavy fecal pollution all over the examined territory. The utilization of antihelminthic drug of popular medicine, which has a specific action on A. lumbricoides, could explain the lack and the low prevalence, respectively, of A. lumbricoides infections in both examined areas. In the past, other authors emphasized the low prevalence of this parasite for other Guinea Bissau regions which have a different geomorfological constitution. The cases of S. fuelleborni and H. nana are the first reported for Guinea Bissau.

Adolescent↗
PubMed1987

[Human intestinal parasites in Subsaharan Africa. III. Pemba Island (Zanzibar-Tanzania)].

The authors carried out a coprological survey in Pemba Island, analysing, by modified Ritchie technique, 413 stools samples. The specimens were collected among the population from apparently healthy subjects chosen at random in a number equal to 2% of the whole population. The examined subjects were divided in 3 age groups, 211 were males, 202 females. The following results were obtained (in order of prevalence): a) Protozoa: Entamoeba coli 35.6%, Giardia intestinalis 5.6%, Endolimax nana 4.3%, E. histolytica 3.1%, Chilomastix mesnili 2.9%, Iodamoeba buetschlii 4.3%, E. hartmanni 0.7%; b) Helminths: Trichuris trichiura 87.9%, Ancylostomatidae 67.5%, Ascaris lumbricoides 39.7%, Strongyloides stercoralis 18.9%, Schistosoma haematobium 1.9%, S. mansoni 0.2%, S. fuelleborni 0.2%, Enterobius vermicularis 0.2%. The high moisture of soil and the rain distribution during the year could be favouring the high prevalence of T. trichiura and Ancylostomatidae. The case of schistosomiasis due to S. mansoni reported, seems to be imported from the Mainland, while the case of S. fuelleborni could be autochtonous. Totally, 392 subjects (94.4%) were found positive for pathogenic species (Helminths and Protozoa).

Adolescent↗