The infection comes as Jaysen Carr, a 12-year-old boy from South Carolina, died on July 18 after being exposed to Naegleria fowleri while swimming in Lake Murray. The incident has drawn attention to the dangers of this rare but deadly amoeba that thrives in warm freshwater during the summer.

The deadly infection has been historically rare, but as climate change heats up waters and worsens flooding, research shows cases could become more common.