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Published on: 7/23/2025

Is brain-eating amoeba fatal?

Yes, the brain-eating amoeba, Naegleria fowleri, is often fatal when it causes an infection.

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Explanation

The brain-eating amoeba, known as Naegleria fowleri, can cause a serious illness called Primary Amoebic Meningoencephalitis (PAM). This infection is very dangerous and often leads to death.

How It Happens:

  • Naegleria fowleri is found in warm freshwater, like lakes and hot springs.
  • People can get infected when contaminated water goes up the nose.

What It Does:

  • Once inside, the amoeba travels to the brain, causing severe swelling and damage.

Symptoms:

  • Early signs include headache, fever, nausea, and vomiting.
  • As the disease progresses, symptoms can include stiff neck, confusion, and seizures.

Outcome:

  • Unfortunately, most cases are fatal, but catching it early and getting treatment quickly can help.

It's important to be cautious when swimming in warm freshwater and to avoid getting water up your nose.

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