More than 85 million children under-five years old are the target of a massive cross-border vaccination campaign which is currently ongoing in 19 countries across Central and West Africa, aimed at stopping a year-long polio epidemic.

The campaign started on 6 March 2010 March in Benin, Burkina Faso, Cape Verde, Cameroon, Central African Republic, Chad, Gambia, Ghana, Guinea, Guinea Bissau, Liberia, Mali, Mauritania, Nigeria, Senegal, and Sierra. Niger, Togo and Cote d’Ivoire will join at a later date due to political transitions or elections.

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