Naegleria fowleri, the amoeba's scientific name, is known to prefer warm, freshwater environments. When inhaled through the nose of humans, typically when swimming in lakes or rivers, it can cause a rare type of brain infection known as primary amebic meningoencephalitis, or PAM. The infection is nearly always fatal.
https://weather.com/health/news/2020-12-22-brain-eating-amoeba-farther-north-climate-change