Treatment failure of pyrimethamine-sulphadoxine and induction of Plasmodium falciparum gametocytaemia in children in western Kenya.

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Publication year
2003Source
Tropical Medicine & International Health, 8, 5, (2003), pp. 427-30ISSN
Publication type
Article / Letter to editor

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Organization
Medical Microbiology
Journal title
Tropical Medicine & International Health
Volume
vol. 8
Issue
iss. 5
Page start
p. 427
Page end
p. 30
Subject
UMCN 4.1: Microbial pathogenesis and host defenseAbstract
Sub-Saharan Africa faces increasing levels of resistance of Plasmodium falciparum parasites to the first-line drug pyrimethamine-sulphadoxine (SP). Successful treatment with SP is reported to induce gametocytes and drug resistance may further increase gametocytaemia after treatment. Treatment success, gametocyte prevalence and gametocyte density were determined in 224 asymptomatic children in western Kenya on day 7 after treatment with SP. Treatment failure (R2 or R3 resistance) was observed in 22% of the children. The relative risk to show gametocytes on day 7 after treatment in children with treatment failure was 4.1 (95% CI 1.4-11.6) times higher compared to children with a sensitive infection, after adjustment for age and trophozoite density at the start of treatment. In addition, the gametocyte density was also higher upon SP treatment failure. These findings are reason for concern, as the increased gametocyte prevalence and density after SP treatment failure may increase the spread of SP-resistant strains in the population.
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- Academic publications [227613]
- Electronic publications [107273]
- Faculty of Medical Sciences [86193]
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