The 65th annual meeting of the American Society of Tropical Medicine and Hygiene will commence this Sunday. Included in the annual meeting will be a symposium titled: Seasonal malaria chemoprevention (SMC) at scale: evidence from eight countries. Co-chaired by Malaria Consortium and the London School of Hygiene & Tropical Medicine, the event will focus on sharing key lessons learnt in delivering SMC at scale across the Sahel.