Naegleria Infection is a rare but severe and fatal brain infection caused by an amoeba called Naegleria fowleri. N. fowleri is found in warm freshwater and its surrounding soil. People who go swimming in warm freshwater (i.e., lakes, rivers, and hot springs) can get infected. This “brain-eating amoeba” enters through the nose and climbs up, invades the brain and destroys brain tissue, and damages cells in human blood vessels.
Naegleria infections are rare. Cases occur mostly during the summer months. Infections are likely to happen during months of high temperature because water temperature also gets tall, and water levels are low. This is the most favorable environment for N. fowleri. There is a small risk of contamination in properly chlorinated swimming pools and spas. However, in sporadic cases, the brain-eating amoeba has been found in poorly-maintained, and minimally-chlorinated swimming pools, and tap water. However, note that drinking contaminated water cannot get you infected, and the disease is not contagious.