Sulfadoxine-pyrimethamine resistance and intermittent preventive treatment during pregnancy: a retrospective analysis of birth weight data in the Democratic Republic of Congo (DRC).

Objective: To assess the effect of intermittent preventive treatment with sulfadoxine-pyrimethamine (IPTp-SP) on birth weight in sites with varying degrees of drug resistance.

Methods: Birth weight data from three regions in Democratic Republic of Congo with varying degrees of sulfadoxine-pyrimethamine (SP) resistance (1.6% in Mikalayi, 21.