This is famously the case in the Meningitis Belt – which stretches across 26 countries in sub-Saharan Africa, from Senegal to Ethiopia. Dust, high temperatures and low humidity throughout the dry season are thought to damage the back of the throat and give the bacteria a route into the body. This triggers regular epidemics.

.jpg?trim=0,0,0,0&width=1200&height=800&crop=1200:800)
