A regional workshop dedicated to the finalisation of the research protocol on the determinants of the resurgence of vaccine-preventable diseases in the ECOWAS region (DETAMEV-ECOWAS) was held from 9 to 13 March 2026 in Conakry, Republic of Guinea. This technical meeting, organised by the West African Health Organisation (WAHO), brought together representatives of Expanded Programme on Immunisation (EPI), researchers in...