"Moderate increases in temperature and rainfall can herald cholera epidemics, a study in East Africa has found, and researchers urged governments to use those environmental cues to better protect vulnerable populations.

The researchers matched cholera outbreaks which occurred in Zanzibar between 1999 and 2008 against temperature and rainfall records over the same period and found that the environmental changes were closely followed by disease."

Tan Ee Lyn reports for Reuters May 31, 2011. [2]