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C Ripert

Publications and source records attributed to C Ripert.

84 records · Page 5Linked to original sources
PubMedDate not supplied

[Epidemiological study of bancroftian filariasis in the Logone Valley (North Cameroon) (author's transl)].

In the Logone Valley, Yagoua and the surrounding area, the prevalence of the bancroftian filariasis was measured by means of determinating the microfilarian rate: 22,1 p. 100 in males and 9,8 p. 100 in females. The immunofluorescence test on D viteae frozen sections showed the presence of antibodies in 61,5 p. 100 of the males and 68,2 p. 100 of the females. A balance between the microfilarial rate and the percentage of inhabitants with specific antibodies was observed. Parasitological and immunological examinations appeared to be complementary. The microfilarial density is 19 microfilariae/20 microliter of blood in males and 13 microfilarae/20 microliter in females. Elephantoid extremities of scrota was observed in 13,2 p. 100 of the adult males, all of them having more than 40 years of age. Females are less affected than males. At the beginning of the rainy season, females of A. gambiae were the mosquitos the most frequently caught in the houses.

Adolescent↗
PubMedDate not supplied

[Epidemiological and clinical features of malaria in two villages of the Lékié division (Cameroon)].

The examination of the thick drops shows malaria parasites in 20,8% of the slides in Minkama and Nalassi: 95,7% of those slides are positive for P. falciparum and 4,3% for P. malariae. The parasite rate, representing the percentage of children up to 9 years of age showing parasites in their blood, is 42,2%. Using the immunofluorescent test, antibodies are found in 43,7% of the blood samples in the study area. In the hospital, 51% of the patients with malaria are 0 to 4 years old children. The clinical symptoms observed are, in a decreasing frequency, fever, vomiting and diarrhoea, myalgia, arthralgia and asthenia, convulsions, delirious or coma. They are no obvious correlations concerning the rain-gauging data and the monthly number of malaria cases admitted at the hospital in this Cameroonian rainforest area.

Adolescent↗
PubMedDate not supplied

[An epidemiological study of intestinal bilharziasis and roundworm infections in Bafia (Cameroon)].

The prevalence of intestinal helminthiasis is measured by means of stool examinations. In Bafia eggs are passed in the feces of 69.1% of the inhabitants for Ascaris lumbricoides, 70.1 % for Trichuris trichiura, 59.6 % for Necator americanus and 14.8% for Enterobius vermicularis. A small focus of intestinal bilharziasis exists in Bafia and eggs of Schistosoma mansoni are found in the feces of 18.6% of the persons studied. Biomphalaria pfeifferi is the intermediate host of the parasite and transmission occurs in the town itself, in the fish-culture pool and in the rivers Guen and Rutop.

Adolescent↗
PubMedDate not supplied

[Epidemiologic study of S. haematobium bilharziasis in the rice belt of Yagoua (North Cameroon). I. Prevalence of infestation and evaluation of the parasitic load].

The epidemiological study of urinary bilharziasis concerns family surveys done in four villages, three of them been located in the rice fields and the other one outside these fields: 990 urine examinations are performed by filtration as well as 966 immunological tests, using an hemagglutination technique and the heterologous antigen S. mansoni. The prevalence of bilharziasis varies from a village to the next, as well as the parasitic load, measured by means of number of eggs per 10 ml urine, in relation with the distance separating the village from the artificial water network built by the rice company. In Dabaye 62.4 % of the examined inhabitants are voiding eggs of S. haematobium, in Toukou 56.9 %, in Vele 31.6% and in Zebe 20.1%. In Toukou and Dabaye all teenagers examined were passing eggs in their urine.

Adolescent↗
PubMedDate not supplied

[Epidemiologic study of S. haematobium bilharziasis in the rice fields of Yagoua (North Cameroon) II. Distribution and ecology of intermediate hosts].

While inventoring the local malacological fauna and evaluating the density of species acting as intermediate hosts of human schistosomes it has been shown that Bulinus truncatus is predominant in the study area. Bulinus globosus is scarcely encountered. Biomphalaria pfeifferi is only found in the Mayo Guerleo, in irrigation canals and draining ditches. But B. globosus and B. pfeifferi have not yet invaded the recent aquatic network and are not found in the lake nor in the newly created irrigation systems. Snails shedding cercariae of S. haematobium and S. mansoni have been collected in the area. Bulinus forskalii is found in all types of permanent of temporary waterbodies but S. intercalatum has not yet been reported from North-Cameroon. Lymnaea natalensis, the intermediate host of Fasciola gigantica, is found in the lake and in the canals, in the Mayo Guerleo and in the Toupasko pool. The rice field does not form by itself a favorable environment for snails to develop in it. Spots where transmission occurare more often in the area the secondary of tertiary irrigation canals and the brains. The ditches obstructed by plants are the places where the snails are developing best. Bulinus spp. are found in large numbers in the lowest parts of the aquatic network and they accumulate there to survive drought conditions in the mud. The recently built irrigation systems are not massively invaded by the snails yet and the prevalence of bilharziasis in the area correspond to the distribution of the intermediate hosts of schistosomes and to the density of the snails populations.

Agriculture↗
PubMedDate not supplied

[Epidemiologic study of onchocerciasis in the Matakams of the Mandara Mountains (North Cameroon)].

The epidemiological study of onchocerciasis performed in the area, where a certain number of dams are already build, shows that the prevalence of the disease varies in the different villages. The variations observed are probably in relation with the distance separating the villages from the temporary breeding sites of S. damnosum. The onchocerciasis is of the savannah type. The visual acuity is low and blinds are frequently seen in the villages where the prevalence of the disease is high.

Adolescent↗
PubMedDate not supplied

[Epidemiologic and clinical study of paragonimosis in Cameroon. Results of niclofolan treatment].

Paragonimiasis does not occur only in the South West Province of Cameroon. Four foci exist in the country. They are the well known focus in the Mount Kupe area, the Mbam focus, the Nyong focus and the Ntem focus. All of them are located in the rainforest within the distribution area of Potadoma. This disease, characterized by the presence of eggs in sputum and feces, has often been confused with tuberculosis. In the villages where paragonimiasis is diagnosed by means of parasitological techniques circulating antibodies, revealed with a P. westermani antigen (ELISA), are often found in blood specimens taken from inhabitants. Teen agers suffer the most from the disease and females more often than males. Women and children are traditionally concerned with crabs fishing and they eat them after partly raw. Crabs of the genus Sudanautes contain the infective metacercariae. Paragonimiasis is enzootic and the civet cat V. civetta seems to be the main natural definitive host in Cameroon. Niclofolan given orally in a single dose of 2 mg/kg body weight showed a 100% cure rate. Side reactions are mild and transient.

Cameroon↗
PubMedDate not supplied

[Sensitivity of S. intercalatum to praziquantel (author's transl)].

The stools of 35 patients with S. intercalatum bilharziasis are examined 48 hours, 45 days and 6 months after treatment, using praziquantel, a new trematodicide drug, in an individual single dose of 40 mg/kg body weight. The number of eggs per gram of faeces is not significantly reduced 2 days after treatment. After 45 days however eggs are only to be found in the stool of one patient among the 25 treated persons who were seen for control. Six months later 23 persons were examined again and 3 stools specimens were found positive, this being possibly due to reinfection. The drug has been well tolerated, except for minor side effects such as headache, nausea and abdominal discomfort.

Adolescent↗
PubMedDate not supplied

[Epidemiological study of intestinal helminthiases (ascariasis, necatoriasis, taeniasis, and bilharziasis) in the town of Maroua (North Cameroon). Results of the treatment of the population with mebendazole].

Prevalence of intestinal helminthiasis: 970 stool specimens are examined in Doualare and 999 in Doursongo (Maroua) North Cameroon. In this sample eggs of T. saginata are seen in 14.0% of the specimens, eggs of A. lumbricoides in 5.1%, N. americanus in 5.8% and S. mansoni in 2.1%. Eggs of T. trichiura, S. stercoralis and H. nana are found in less than 2% of the specimens. Stool examinations are performed in Doursongo before and after treatment with mebendazole: 94.1% of the inhabitants with A. lumbricoides eggs in their stools are free of this parasite after treatment, with T. trichiura 83.3% are cured.

Adolescent↗
PubMedDate not supplied

[Malaria indices, larval ecology and trophic activity of Anopheles mosquitoes in Djohong (Adamaoua, Cameroon) in the rainy season].

In Djohong in the wet season the prevalence of malaria is 17.5% for Plasmodium falciparum and 1.1% for Plasmodium malariae. In children 2 to 9 years of age the plasmodic index is 38.6% (mesoendemicity) for the children of the peasants and 9.4% for those belonging to other socioeconomical groups. In infants less than 12 months old, the plasmodic index is 9.3%, this relatively high rate corresponding to the high transmission period of the rainy season. Anopheles gambiae is the mosquito species most often found in the area (2/3 of the mosquitoes caught in the houses). The breeding sites in he surrounding of the houses are rainwater holes linked to human activity. At a larger distance from the houses, in the valley, the breeding sites are water holes borrowed for the retting of cassava tubercle or natural rock pools found in the basaltic shores of the Mbere river. The trophic activity of Anopheles gambiae and Anopheles funestus is high between 0 and 4 hours a.m. In October the mean number of anopheline mosquitoes bites per night per inhabitant is 33 inside the houses and 7 outside.

Adolescent↗