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Clinical Trial
. 2005 Oct 1;331(7519):727-33.
doi: 10.1136/bmj.331.7519.727.

Cluster randomised trial of intermittent preventive treatment for malaria in infants in area of high, seasonal transmission in Ghana

Daniel Chandramohan  1 , Seth Owusu-Agyei, Ilona Carneiro, Timothy Awine, Kwame Amponsa-Achiano, Nathan Mensah, Shabbar Jaffar, Rita Baiden, Abraham Hodgson, Fred Binka, Brian Greenwood
Affiliations
Clinical Trial

Cluster randomised trial of intermittent preventive treatment for malaria in infants in area of high, seasonal transmission in Ghana

Daniel Chandramohan et al. BMJ. .

Abstract

Objective: To evaluate the effects of intermittent preventive treatment for malaria in infants (IPTi) with sulfadoxine-pyrimethamine in an area of intense, seasonal transmission.

Design: Cluster randomised placebo controlled trial, with 96 clusters allocated randomly to sulfadoxine-pyrimethamine or placebo in blocks of eight.

Interventions: Children received sulfadoxine-pyrimethamine or placebo and one month of iron supplementation when they received DPT-2, DPT-3, or measles vaccinations and at 12 months of age.

Main outcome measures: Incidence of malaria and of anaemia determined through passive case detection.

Results: 89% (1103/1242) of children in the placebo group and 88% (1088/1243) in the IPTi group completed follow-up to 24 months of age. The protective efficacy of IPTi against all episodes of malaria was 24.8% (95% confidence interval 14.3% to 34.0%) up to 15 months of age. IPTi had no protective effect against malaria between 16 and 24 months of age (protective efficacy -4.9%, -21.3% to 9.3%). The incidence of high parasite density malaria (> or = 5000 parasites/mul) was higher in the IPTi group than in the placebo group between 16 and 24 months of age (protective efficacy -19.5%, -39.8% to -2.2%). IPTi reduced hospital admissions with anaemia by 35.1% (10.5% to 52.9%) up to 15 months of age. IPTi had no significant effect on anaemia between 16 and 24 months of age (protective efficacy -6.4%, -76.8% to 35.9%). The relative risk of death up to 15 months of age in the IPTi group was 1.26 (95% confidence interval 0.81 to 1.96; P = 0.31), and from 16 to 24 months it was 1.28 (0.77 to 2.14; P = 0.35).

Conclusions: Intermittent preventive treatment for malaria with sulfadoxine-pyrimethamine can reduce malaria and anaemia in infants even in seasonal, high transmission areas, but concern exists about possible rebound in the incidence of malaria in the second year of life.

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Figures

Figure 1
Figure 1
Kaplan-Meier survival estimates of time to first episode of malaria by intervention group
See this image and copyright information in PMC

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