[Development of the prevalence rate of four intestinal parasites in children]. / Evolution du taux de prévalence de quatre parasites intestinaux chez l'enfant.

During the last 2 decades, the same coprological techniques for the detection of parasites have been applied by the same team in the parasitology laboratories of the Children's Hospital of Bordeaux. A marked decrease in the prevalence of the most frequently occurring parasites (Giardia and Entamoeba coli cysts, Ascaris and Trichocephale eggs) has been observed. Similar results have also been found in other French parasitology laboratories. This reduction in the parasite infection rate is concomitant with a sustained improvement in public hygiene and the living standards of families. It is also likely that an evolution in childhood behaviour at school, outdoors, and at home, accounts for a decrease in intestinal parasites.

[Critical study of an interdisciplinary survey of urinary schistosomiasis in Burkina Faso]. / Etude critique d'une méthode d'enquête interdisciplinaire sur la schistosomiase urinaire au Burkina Faso.

We consider an approach to built on a score summarizing some demographic, social, geographic and parasitologic data for purpose of measuring the health impact of schistosomiasis. Operational definitions are given for the social, ecological and medical variables and for the survey design. Twenty villages from the Bam-Kongoussi district were kept for the survey, giving a sample of 11,396 peoples. The process of the survey is described. The overall response rate is 63%. The sensitivity of the survey's results in regard to the non-responses is considered along with the possibility to implement a call back survey.

[Course of the dermatophytic spectrum in tinea capitis. Apropos of 124 cases seen in Bordeaux]. / Evolution du spectre dermatophytique des teignes du cuir chevelu. A propos de 124 cas observés à Bordeaux.

The purpose of this study was to evaluate the epidemiology of tinea capitis in the Bordeaux area (Dermatology Unit of the Hôpital des Enfants, Bordeaux) during a 6-year period (January, 1979 to December, 1984). Dermatophytic infection of the hair was proven by culture in 124 patients, 21 of whom had a negative potassium hydroxide direct examination. Age and sex distribution are shown in figure 1. One case was observed in a 15 days old infant, and 4 cases in adult females (3 young black mothers of affected children, 1 elderly white woman). Table I indicates the geographical origin of the patients and the isolates identified. The incidence of anthropophilic dermatophytes has increased from 13 p. 100 to 50 p. 100 since our previous survey (1975-1978). M. langeronii (29 cases), T. soudanense (19 cases) and T. violaceum (10 cases) were isolated mostly among African immigrants from Western tropical Africa and the Maghreb. However, 4 children of French origin without any history of previous sojourn in endemic areas developed tinea capitis due to M. langeronii; the source of contamination could not be determined. Zoophilic dermatophyte infection was mainly caused by M. canis (50 cases), with cats being the most frequent source of contamination. Family cases were frequent: 64 corresponding to 28 families. This may be due to either interhuman contamination or the presence of a contact pet animal in the family. The discussion is focused on: the shift in dermatophytic isolates from tinea capitis toward anthropophilic species, notably M. langeronii, mainly caused by an increased immigration from West Africa; the relevant clinical and mycological correlations.(ABSTRACT TRUNCATED AT 250 WORDS)

[Urban and rural malaria in Niger. The case of the Department of Maradi]. / Paludisme urbain et rural au Niger. Le cas du département de Maradi.

In Niger, two communities, a urban one (Maradi) and a rural one (Tarna), living in a same malarious Soudano-Sahelian climatic area, were compared during wet and dry seasons by different methods (spleen rate, parasite rate, parasite count, level of immunity). During wet and dry season, spleen rates (0.7% and 2.6%) and parasite rates (1% and 1.6%) are considerably lower at Maradi than those observed at Tarna (spleen rates: 38% and 42%; parasites rates: 10% and 22.5%). It is shown that seroconversion occurs later in urban sector (100% between 20 and 29 year age) than in rural sector (100% between 10 and 15 year age). All malarious indicators were negative in a high percentage of Maradi-born children under 9 (79% during wet season and 81% during dry season) against respectively 28% and 31% at Tarna. Better paludometric index in urban community is a favourable sanitary indication. But epidemiological control must be prosecuted since the number of non-immune subjects is increased.

[Epidemiology of intestinal helminthiasis (necatoriasis, taeniasis, ascariasis, trichuriasis) in the Kaya Region (Upper-Volta)]. / Etude épidémiologique des helminthiases intestinales (nécatorose, téniase, ascaridiose, trichocéphalose) dans la région de Kaya (Haute-Volta).

Prevalence of intestinal helminthiasis: 1 223 stool specimens are examined in Louda and 690 in Damesma (Kaya, Upper-Volta). In this sample eggs of N. americanus are seen in 14,7% of the specimens in Louda and 9,3% in Damesma. Eggs of H. nana are seen in 10% of the specimens, for the two villages. Eggs of T. saginata are seen in 7.4% of the specimens of the two villages. And eggs of A. lumbricoides, T. trichicera are found inters then 0.5% of the specimens.

[Hepatic distomatosis caused by Clonorchis/Opisthorchis spp. in refugees from South-East Asia. Effects of treatment with praziquantel]. / Etude des distomatoses hépatiques à Clonorchis/Opistorchis spp. chez des réfugiés d'Asie du Sud-Est. Effets du traitement par le praziquantel.

The prevalence of liver infection (percentage of patients voiding Clonorchis or Opistorchis spp. eggs in faeces) is 18.5% in the South East Asian refugees. Both sexes are equally affected and the older the refugees are, the more often they are found infected. Laotians, who like to eat the fishes raw, are harboring leverflukes more often than other Far-east inhabitants. Praziquantel, prescribed at a dose of 25 mg/kg body weight given 3 times on a single day, is very efficient in the treatment of the Far-east hepatic distomatosis. Tolerability to praziquantel is excellent. Side effects are few and of moderate intensity.

[Human activities, hydro-agricultural management and urinary schistosomiasis. Methodological approach and results (a preliminary study in Upper-Volta)]. / Activités humaines, aménagements hydro-agricoles et schistosomiase urinaire. Approche méthodologique et résultats (à propos d'une étude préliminaire en Haute-Volta).

In the schistosomiasis endemic sub-sahelian region, a study of the prevalence of the disease was carried out on three different areas: the highest was around a small river, the lowest in the hydro-agricultural management region, mean prevalence was noted around a natural lake. Human activities have been classified with regards to the areas of transmission. Activity is closely linked to prevalence. For the populations, symptoms of urinary schistosomiasis (Rudzenga) constitute a real disease, traditional healers are the masters of earth (Tengsoba), water has hardly any importance in transmission.

[Evaluation of the larvicidal activity of Bacillus thuringiensis serotype H14 on mosquitoes in natural breeding places]. / Evaluation en gites naturels de l'activité larvicide du sérotype H14 de Bacillus thuringiensis sur les culicidés.

The experiments conducted with Bacillus thuringiensis var. israelensis, serotype H14, in nature, show that this Bacillus has a specific and extremely high larvicidal power against the larval population of Culicidae. It operates very quickly but its action seems relatively short-time lasting. Considering the increasing resistance of larvae to organophosphorus compounds, this new serotype presents a particular interest for the control of mosquitoes.

[Tinea capitis: 73 cases observed in Bordeaux (author's transl)]. / Teignes du cuir chevelu. 73 cas observés à Bordeaux.

73 cases of tinea capitis were observed in the "Hôpital des Enfants" in Bordeaux during these last five year. 71 children under 14 years of age and only 2 adults have seen. The dermatophytic spectrum transformation noticed in other parts of Western Europe is also encountered in Bordeaux. 83 p. 100 are affected by zoo-antropophilic dermatophytes, M. canis chiefly in town, T. mentagrophytes, T. verrucosum in rural aeras. The cases are often familial, from an infected animal, but without any interhuman transmission. Only 8 out of 73 cases are due to strict antropophilic dermatophytes and are found in newly arrived immigrants from North Africa (T. violaceum, T. schönleini) of from West Africa (M. langeroni, T. ferrugineum, T. soudanense). Not a single case of scholar transmission could be observed. Cure by micronised griseofulvine per os (15 mg/kg/day) associated with local care was effective in all cases.