![]() ![]() It grows best at high temperatures up to 115☏ (46☌) and can survive for short periods at even higher temperatures. Naegleria fowleri is a heat-loving (thermophilic) organism, meaning it thrives in heat and likes warm water. The amebae may be present in any freshwater body in the United States, regardless of the state, especially during the warmer months of July, August, and September. Naegleria fowleri lives in warm fresh water and soil around the world. People cannot be infected with Naegleria fowleri by drinking contaminated water. There is no evidence that Naegleria fowleri can spread through water vapor or aerosol droplets (such as shower mist or vapor from a humidifier). In very rare instances, people have gotten Naegleria fowleri infections from recreational water that didn’t have enough chlorine in it, such as pools, splash pads, or surf parks. Naegleria fowleri infections may also happen when people use contaminated tap water to cleanse their noses during religious practices or rinse their sinuses (sending water up the nose). The ameba then travels up the nose to the brain, where it destroys the brain tissue and causes a devastating infection called primary amebic meningoencephalitis (PAM). ![]() This typically happens when people go swimming, diving, or when they put their heads under fresh water, like in lakes and rivers. Naegleria fowleri infects people when water containing the ameba enters the body through the nose. How does Naegleria fowleri infect people? ![]()
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