Geographical differences in leprosy risk are not understood, but may provide clues about the natural history of the disease.
We report an analysis of the geographical distribution of leprosy in Karonga District, a rural area of Northern Malawi, between 1979 and 1989. was Methods.
Cohort study of the incidence of leprosy based on two total population surveys.
Area of residence was determined using aerial photographs, which allowed identification of households, as well as location of roads, rivers and the lake shore.
Incidence rates were between two and three times higher in the north compared to the south of the district, and lowest in the semi-urban district capital.
The most obvious environmental difference between these regions is the north's higher rainfall and more fertile soil.
There was no overall association between leprosy incidence and population density, although highest rates were observed in the least densely populated areas.
Looking at the entire district, incidence rates increased with increasing distance from a main road, but declined with increasing distance from a river or from the shore of Lake Malawi.
The negative association with proximity to rivers may reflect the larger number of rivers in the north of the district.
Apparent differences in incidence rates between groups speaking different languages reflected confounding by area of residence.
There is a marked variation, not explained by socioeconomic ...
Mots-clés Pascal : Lèpre, Mycobactériose, Bactériose, Infection, Epidémiologie, Variation géographique, Milieu rural, Malawi, Afrique, Homme, Facteur milieu, Environnement, Incidence, Peau pathologie
Mots-clés Pascal anglais : Leprosy, Mycobacterial infection, Bacteriosis, Infection, Epidemiology, Geographical variation, Rural environment, Malawi, Africa, Human, Environmental factor, Environment, Incidence, Skin disease
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0073916
Code Inist : 002B05B02L1. Création : 199608.