What is Naegleria fowleri?
Naegleria fowleri is an amoeba that lives in the sediment along the banks of freshwater lakes and rivers. Naegleria fowleri prefer warmer water and more likely to cause infection when water temperatures are above 80°F. However, they can survive for long periods of time in colder water while they are in cyst form and become dormant. For this reason, infection from Naegleria fowleri can be found in tropical as well as cooler climates.