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

The Missouri Department of Health and Senior Services has announced a case of a Missouri adult with an infection of Naegleria fowleri, an amoeba that can cause a rare, deadly brain infection. The infection is called amebic meningoencephalitis, or PAM, and is also known as the "brain-eating" infection, according to the department.