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Free Content Effectiveness of intermittent preventive treatment with sulphadoxine-pyrimethamine for control of malaria in pregnancy in western Kenya: a hospital-based study

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Summary Objective 

To monitor the effectiveness of intermittent preventive treatment (IPT) with sulphadoxine-pyrimethamine (SP) for the control of malaria in pregnancy at delivery in the Provincial Hospital in Kisumu, Kenya, and to assess the effect of IPT in participants in a cohort study. Methods 

Between June 1999 and June 2000, information on IPT and birth outcome was collected in 2302 consecutive deliveries. A group of 889 women, who were enrolled in a cohort to assess the interaction between malaria and HIV, were analysed separately because of the enrolment criteria and different access to health care. Results 

The prevalence of placental malaria was 13.8% and of low birthweight (LBW) was 12.2%. In multivariable analysis, IPT (≥1 dose of SP) was associated with a reduction in placental malaria and LBW [adjusted odds ratio (OR) 0.56, 95% confidence interval (CI) 0.39–0.83 and OR 0.65, 95% CI 0.45–0.95, respectively]. An adjusted mean increase in birthweight of 61 g was seen (95% CI 22–101 g) for each increment in number of SP doses (≥2 doses grouped together). IPT was associated with a reduction in placental malaria in HIV-seronegative women (OR 0.49, 95% CI 0.28–0.86) but this was not significant among HIV-seropositive women (OR 0.45, 95% CI 0.20–1.05). A significant effect on birthweight could not be detected among participants in the HIV-cohort. Conclusions 

This evaluation confirms that IPT with SP is effective in reducing placental malaria and LBW. It will be important to increase coverage of IPT and to extend IPT to antenatal clinics in peri-urban and rural areas.
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Keywords: Kenya; effectiveness; malaria; pregnancy; sulphadoxine-pyrimethamine

Document Type: Research Article

Affiliations: 1:  Kenya Ministry of Health, Kisumu, Kenya 2:  Division of Parasitic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA 3:  Department of Infectious Diseases, Tropical Medicine and AIDS, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands

Publication date: 01 March 2004

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