Higher concentrations of microfilariae in capillary blood from the ear lobe than from the finger in Wuchereria bancrofti and Mansonella ozzardi infections.
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Biomedical subjects
Publications and source records attributed to C Raccurt.
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The authors describe a new genus and a new species of Ceratopogonidae: Baeodasymyia modesta n.g., n.sp., which somewhat resemble the two genera Paradasyhelea Macfie, 1940 and Baeohelea Wirth and Blanton, 1970.
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An epidemiological survey is conducted by spot-checks over about 10% of the population of Tortuga Island in order to estimate the prevalence of intestinal helminthiasis in that region of the Republic of Haïti, by researching the presence of eggs in faeces. Population sample is representative of the whole of the island's population excepting the 0-4 years old group whose faeces are difficult to obtain. Faeces are examined through the Kato method, a very simple, quick and remarkably accurate procedure. Trichuriasis and ascariasis, which are transmitted in the area around the house, affect mainly children, but also adults. Women seem to be more often infested than men by Ascaris lumbricoides. Necatoriasis, the farmer's disease, hits primarily young men and elderly women who spend most time in the fields. It is observed in inland villages where people are engaged in agricultural production, with a higher incidence if they are located in a not so sloping zone.
Results of the numbering of T. trichiura, A. lumbricoides et N. americanus eggs found in the stool, taken from a representative sample of the population of Tortuga island, shows the importance of parasital load borne by people attacked by the parasites. Those who produce the greatest number of eggs for a gram of faeces are young children. For adults, the evolution of the parasital load follow that of the prevalence, for each Nematodes, with an increase of the average number of eggs of A. lumbricoides per gram of faeces for adults aged 30 to 44, and of the average number of N. amercanus per gram of faeces for adults aged 45 to 59. Moreover women adults show a higher number of parasites than men. Farmers from villages within the interior of the island who are more often attacked than those from the coast, also bear a parasital load which is twice as high. Victims less than 5 years old and more than 30, particularly women, whose faeces are richest in eggs, seem to present the greatest danger for the transmission of ascaridiosis and necatorosis in Toruga Island.
In the town of Limbe, in Haiti, 16,8% of the inhabitants show W. bancrofti microfilariae in their blood taken by finger prick between 8.00 and 10.00 p.m. From those positive patients, 208 have received a cure of DEC at the dosage of 6 mg/kg/day during ten days. The control of the therapeutic efficacity among 190 patients, after three and a half months of this cure, shows a negativity of 72%. The positives patients show a very low parasitic charge (MfD50 = 1.9). If the secondary effects are frequent (83.7%), they are often benign and temporary.
One hundred and twelve inhabitants of an area endemic for M. ozzardi received 20 cmm capillary blood samples by finger prick before and 30 minutes after the ingestion of 100 mg of diethylcarbamazine citrate. No significant variations in microfilaremia were detected. Thus, a provocative dose of DEC would not appear to be helpful in sampling for mansonellosis in Haiti.