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Frequency of urologic lesions was evaluated in 408 children from 6-15 years old in a suburban area of Bamako district in Mali, Missabougou; 65.2% from children were infected by Schistosoma haematobium, 13% by Schistosoma mansoni and 0.2% by Schistosoma intercalatum. Urologic lesions have been demonstrated in 223 cases among which 66 cases of urinary bladder lesions, 108 cases of hydronephrosis and 49 cases of mixed lesions. In order of the frequency we had the following uropathic lesions: wall thickening, wall irregularities, localised hypertrophies and hydronephrosis. We did not found any lesions in 185 children. Infection due to S. haematobium did not varied significantly in spite of age group, sex, schooling of children or the profession of the parents. Lesions were strongly correlated with age group (47.8 and 61.3% in 6-9 and 10-15 years old respectively) (p0.01) and with intensity of infection as measured by urinary egg counts (p = 0.0017).

We studied from January to December 1988 the part played by malaria in the etiology of febrile diseases observed in three community clinics of Ouagadougou city (Burkina Faso, West Africa). The diagnosis of malaria attacks was based on the association of a body temperature equal or above 38 degrees C and a parasite density equal or above 10,000 parasitized red blood cells per mm3. We observed that fever attacks were primarily caused by malaria. Among the 5-14 years age group, malaria attacks were responsible for more than 50% of febrile cases and occurred mainly during the rainy season and at the beginning of the dry season (July to October). Ear, nose, throat and lung infections were the other dominant causes of fever attacks and were found during the whole year but especially during the dry season (February, March, September). They were followed by urinary and gastrointestinal infections and other tropical febrile diseases. Clinical diagnosis only of malaria attacks and even more so of fever attacks is poorly reliable.