Amebic meningitis is acquired by Naegleria fowleri entering through which route?

Amebic meningitis is acquired by Naegleria fowleri entering through which route?

• A. Through the nose when contaminated water enters
• B. By ingesting contaminated water
• C. Through a mosquito bite
• D. Through skin contact

Answer: (A)

The infection occurs when contaminated warm freshwater water is forced into the nose during swimming or diving. Naegleria fowleri travels from the nasal mucosa along the olfactory nerves into the brain, causing primary amebic meningoencephalitis. It does not typically enter via ingestion or through skin contact, and the stomach’s acidity generally prevents ingestion from causing CNS infection. So the nasal route during water exposure is the key entry path.

The infection occurs when contaminated warm freshwater water is forced into the nose during swimming or diving. Naegleria fowleri travels from the nasal mucosa along the olfactory nerves into the brain, causing primary amebic meningoencephalitis. It does not typically enter via ingestion or through skin contact, and the stomach’s acidity generally prevents ingestion from causing CNS infection. So the nasal route during water exposure is the key entry path.