Didier Kapuku Bakajika is a Medical Officer–NTD Specialist (onchocerciasis and lymphatic filariasis) with the Expanded Special Project for Elimination of Neglected Tropical Diseases (ESPEN), World Health Organization Regional Office for Africa, Brazzaville, where he has worked since 2017 and served as Acting Team Lead in 2022–2023. He holds an MD from the University of Kinshasa (2003), an MSc(Med) in Epidemiology and Biostatistics from the University of the Witwatersrand (2008), an MSc in Biology and Control of Parasites and Disease Vectors from the University of Liverpool (2014), and an MPhil in Health Research and a PhD in Public Health (concentration in Epidemiology) from Walden University (2026). He began his career as a Medical Officer in the National Onchocerciasis Control Programme, Ministry of Health, Democratic Republic of the Congo (2003–2008). He then served as Principal Investigator at the Rethy site of the WHO/TDR Phase 3 moxidectin trial in Ituri (2008–2013) and as Programmatic Epidemiologist for NTDs with Sightsavers in Accra, Ghana (2014–2017). His research focuses on onchocerciasis and lymphatic filariasis elimination, serological and entomological indicators of transmission interruption, confirmatory mapping, filarial diagnostics in loiasis co-endemic settings, and mass drug administration outcomes in the WHO African Region.