The polio-vaccine conspiracy theory has had direct consequences: Sixteen countries where polio had been eradicated have in recent months reported outbreaks of the disease – twelve in Africa (Benin, Botswana, Burkina Faso, Cameroon, Central African Republic, Chad, Ethiopia, Ghana, Guinea, Mali, Sudan, and Togo) and four in Asia (India, Indonesia, Saudi Arabia, and Yemen). Yemen has had the largest polio outbreak, with more than 83 cases since April. The WHO calls this "a major epidemic."