Two‐Dose versus Monthly Intermittent Preventive Treatment of Malaria with Sulfadoxine‐Pyrimethamine in HIV‐Seropositive Pregnant Zambian Women

Nov 17, 2007The Journal of infectious diseases

Comparing two-dose and monthly malaria prevention with sulfadoxine-pyrimethamine in pregnant Zambian women with HIV

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Abstract

Monthly intermittent preventive treatment of malaria during pregnancy (IPTp) was not more effective than the standard 2-dose regimen in preventing placental malaria or adverse birth outcomes.

Placental malaria rates were similar between monthly IPTp (26%) and standard IPTp (29%).
No significant differences were observed in placental parasitemia between the two regimens (2% vs. 4%).
Maternal anemia, stillbirths, preterm delivery, low birth weight, and infant mortality at 6 weeks showed no variation between the treatment groups.
Findings suggest that IPTp policy should consider local malaria transmission and HIV prevalence.

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BACKGROUND: Intermittent preventive treatment of malaria during pregnancy (IPTp) reduces placental infection, maternal anemia, and low birth weight (LBW). However, the optimal dosing regimen in settings in which human immunodeficiency virus (HIV) is highly prevalent among pregnant women remains controversial.

METHODS: We conducted a randomized, double-blind, placebo-controlled study of IPTp comparing the standard 2-dose sulfadoxine-pyrimethamine (SP) regimen with monthly IPTp among a cohort of HIV-positive pregnant Zambian women. Primary outcomes included placental malaria (by smear and histology) and maternal peripheral parasitemia at delivery.

RESULTS: There were no differences between monthly IPTp (n=224) and standard IPTp (n=232) in placental malaria by histopathology (26% vs. 29%; relative risk [RR], 0.90 [95% confidence interval {CI}, 0.64-1.26]) or placental parasitemia (2% vs. 4%; RR, 0.55 [95% CI, 0.17-1.79]). There also were no differences in maternal anemia, stillbirths, preterm delivery, LBW, or all-cause mortality of infants at 6 weeks.

CONCLUSIONS: In an area of mesoendemicity in Zambia, monthly SP IPTp was not more efficacious than the standard 2-dose regimen for the prevention of placental malaria or adverse birth outcomes. IPTp policy recommendations need to take into account local malaria transmission patterns and the prevalence of HIV.

TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT00270530.

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Two‐Dose versus Monthly Intermittent Preventive Treatment of Malaria with Sulfadoxine‐Pyrimethamine in HIV‐Seropositive Pregnant Zambian Women

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