Climate change heavily affects the water cycle through increasing frequency, severity of floods and droughts and increasing rainfall variability. Vibrio cholerae, the bacteria that causes cholera, is not only a threat during floods, but also thrives during periods with little rain and hot temperatures. Transferred via person-to-person contact, contaminated water and food. During times of low precipitation and high temperatures, the concentration of the bacteria in the water increases, making the disease more dangerous.