The countries are Burkina Faso, Cameroon, the Central African Republic, Côte d’Ivoire, Ghana, Guinea, Liberia, Nigeria and Togo. WHO describes the most recent outbreak activity as concentrated in Burkina Faso, Côte d’Ivoire, Ghana and Liberia, including border areas.
The agency highlights risks from cross-border movement, uneven vaccination coverage and work in forested or mining areas. It says countries are strengthening surveillance, investigations, laboratory testing and vaccination in affected areas.
The 27 October assessment put regional risk at moderate and global risk at low. Publication of the bulletin is the day’s development; its figures should not be interpreted as new cases occurring on 6 November.