International Journal of Epidemiology, Vol 28, 169-174, Copyright © 1999 by International Epidemiological Association
LT Glickman, AO Camara, NW Glickman and GP McCabe
BACKGROUND: Intestinal parasitism is common among children in developing
countries, but the risk factors for infection are not well characterized.
METHODS: A stool examination was performed on 286 randomly selected
children aged 1-18 years from three rural villages in Guinea, Africa.
Information collected by questionnaire was used to examine the relationship
between geophagia and infection with intestinal nematodes acquired by
ingestion versus skin penetration. RESULTS: Fifty-three per cent of
children were infected by at least one type of soil-transmitted nematode.
Geophagia was reported by parents to occur in 57%, 53%, and 43%, of
children ages 1-5, 6-10, and 11-18 years, respectively. The pattern of
geophagia by age and gender of the children more closely resembled the
infection pattern for the two orally acquired and soil-transmitted
nematodes (Ascaris lumbricoides, Trichuris trichiura) than it did the
infection pattern for the two soil- transmitted nematodes that infect by
skin penetration (hookworm, Strongyloides stercoralis). CONCLUSIONS: These
findings demonstrate that geophagia is an important risk factor for orally
acquired nematode infections in African children. Education regarding
geophagia prevention should be an integral component of any
soil-transmitted parasite control programme.
ARTICLES
Nematode intestinal parasites of children in rural Guinea, Africa: prevalence and relationship to geophagia
Department of Veterinary Pathobiology, Purdue University, West Lafayette, IN 47907-1243, USA.
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