West Africa: Polio campaign kicks off
The second three-day round of a synchronized campaign to vaccinate 77 million children against polio in 16 West African countries is now underway.
The wild poliovirus has been reported in eight countries in the region in the past six months: Burkina Faso, Chad, Guinea, Liberia, Mali, Mauritania, Senegal and Sierra Leone, according to the World Health Organization (WHO) and UN Children's Fund (UNICEF).