title: First nationwide survey of the health of schoolchildren in Chad.
abstract: Survey data are presented from a nationwide survey of the health of schoolchildren in Chad. The country was stratified into distinct ecological zones based on satellite sensor environmental data. Twenty schools were visited and 1024 children aged between 6 and 15 years were included in the study. The overall prevalence of stunting, underweight, anaemia and goitre was 18.7, 16.5, 25.1 and 23.3%, respectively. Schistosoma haematobium, Schistosoma mansoni and hookworm were the only helminth species found with prevalences of 13.2, 1 and 32.7%, respectively. A greater proportion of boys were stunted, underweight, anaemic and infected with S. haematobium and hookworm than girls. Older children were more stunted, underweight and infected with S. haematobium and hookworm than younger children, but less anaemic. The prevalence of infection showed marked geographical heterogeneity, with hookworm prevalence being highest in the Sudanian and tropical zone, and S. haematobium being most prevalent in the Sahelian zone and the Logone and Chari basins in the west of the country. These data show that there is a high prevalence of helminth infection in Chad, but that treatment for S. haematobium and hookworm should be targeted to different geographical areas.
authors.affiliation: Department of Infectious Disease Epidemiology, Imperial College School of Medicine, London, UK.
authors.forename: Michael
authors.initials: M
authors.lastname: Beasley
authors.forename: Simon
authors.initials: S
authors.lastname: Brooker
authors.forename: Montanan
authors.initials: M
authors.lastname: Ndinaromtan
authors.forename: Ester M
authors.initials: EM
authors.lastname: Madjiouroum
authors.forename: Marie
authors.initials: M
authors.lastname: Baboguel
authors.forename: Elie
authors.initials: E
authors.lastname: Djenguinabe
authors.forename: Don A P
authors.initials: DA
authors.lastname: Bundy
mesh_terms: D000293:Adolescent; D000740:Anemia / Q000453:epidemiology; D001827:Body Height; D015992:Body Mass Index; D001835:Body Weight; D002596:Chad / Q000453:epidemiology; D002648:Child; D005260:Female; D006042:Goiter / Q000453:epidemiology; D006130:Growth Disorders / Q000453:epidemiology; D006306:Health Surveys; D006725:Hookworm Infections / Q000453:epidemiology; D006801:Humans; D008297:Male; D009748:Nutrition Disorders / Q000453:epidemiology; D015995:Prevalence; D012552:Schistosomiasis / Q000453:epidemiology