Territory size shows the proportion of all cholera cases that were found there, in 2004 or in the most recent year for which data are available.
Cholera is an infection of the intestine, that causes copious watery diarrhea, vomiting and leg cramps, and can quickly result in dehydration and death. Cholera is most common where there is poor sanitation and no access to clean water.
In 2004, 70% of all cholera cases identified were in the regions of Southeastern Africa, Northern Africa and Central Africa. Mozambique had the highest count of cholera cases, at 20 thousand. An epidemic in 1978 in the small population of the Maldives affected 3.8 people in every 100. The Maldives are barely visible on this map.