3. Consider the following statements about Naegleria fowleri, the “brain-eating amoeba”:
- It is a single-celled organism found in warm freshwater environments.
- It causes a rare brain infection called primary amoebic meningoencephalitis (PAM).
- People can be infected with Naegleria fowleri by drinking contaminated water.
- There is an effective treatment for PAM.
Which of the statements given above is/are correct?