The World Health Organization (WHO) global and regional preventive chemotherapy programmes have made a number of key accomplishments. These include the elimination of lymphatic filariasis as a public health problem in Yemen and the establishment of public–private partnerships to facilitate progress towards the elimination and control of neglected tropical diseases (NTDs) (1). More than 1 billion people had been treated globally in 2018 for at least one of five NTDs targeted for control and elimination, with over 1.7 billion treatments distributed to populations in need through mass drug administration (MDA) and a regional coverage of preventive chemotherapy of 21.4% (2).
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