Impact of seasonal malaria chemoprevention: A plausibility evaluation of routine data from health facilities in three implementing states in Nigeria

Authors: Jennifer Chukwumerije, Ebenezer C Ikechukwu, Ekechi Okereke, Olabisi Ogunmola, Daniel Emeto, Emmanuel Salifu, Ayodeji Balogun, Chibuzo Oguoma, Emmanuel Shekarau, Nnenna Ogbulafor, Eoin Cassidy, Christian Rassi, Olusola Oresanya, Chukwudi A Nnaji

Seasonal malaria chemoprevention reduced malaria incidence by 50 percent among children under five in three Nigerian states, with variable impact across locations.

Seasonal malaria chemoprevention (SMC) has been recommended by the World Health Organization (WHO) since 2012 for children 3–59 months in areas with highly seasonal transmission. As of 2024, SMC had been implemented in all 21 eligible states in Nigeria. However, the uptake of SMC remains variable, underscoring the importance of evaluating SMC under programmatic conditions. This study assessed changes in malaria incidence and related epidemiological outcomes across three states (Federal Capital Territory, Kogi and Oyo) implementing SMC.

This poster was presented at the 2025 Annual Meeting of the American Society of Tropical Medicine and Hygiene, held on 9-13 November in Toronto, Canada.