What Is Brain-Eating Amoeba or Naegleriasis?

Naegleriasis is a disease caused by infection with a species of amoeba known as Naegleria fowleri. It is also known as primary amoebic meningoencephalitis (PAM). The pathogen, usually present in a contaminated water source, enters the body through the nose.
Subsequently, it attaches itself to the olfactory nerve, travels to the frontal lobe of the brain and spreads throughout the brain, feeding voraciously on nervous tissue. This organism is believed to be particularly deadly because it has developed effective mechanisms for combating the human body’s immune response and also because it multiplies rapidly once it begins feeding on nervous tissue. The PAM, characterized by inflammation and hemorrhaging, progresses quickly in a matter of days and almost invariably ends in fatality.