What Is Naegleria Fowleri? Malignant Amoeba Causes Untreatable Meningitis

Um, keep it away!

Brain-eating amoebas are spreading and that is just as bad as it sounds. It’s a dangerous epidemic — a fatal form of meningitis — that is currently occurring at increasing rates.

This summer, Fabrizio Stabile, a 29-year-old New Jersey man, died from this brain-eating amoeba, just one day after he was diagnosed, The man contracted the disease after swimming in a wave pool.

An amoeba is a single celled organism, with no defined shape. Many types of amoebas are able to exist within the human body without consequence. They are essentially benign. This particular brain-eating amoeba, however, known as Naegleria fowleri, is entirely malignant.

The amoeba itself is horrifying. Like something out of The Walking Dead, the amoeba multiples by feeding on nerve tissue. As this occurs, inflammation in the brain increases, as well as necrosis and internal bleeding. This is as bad as it sounds.

Naegleria fowleri has the ability to enter the human body through the nasal cavity. From there it can attach to olfactory nerves and then migrate into the brain. Once it enters the brain, the amoeba can cause meningitis. Meningitis is defined as an inflammation of the meninges, which are membranes that surround the brain and spinal column.

According to the Mayo Clinic, symptoms of meningitis include:

  • Sudden high fever
  • Stiff neck
  • Severe headache that seems different than normal
  • Headache with nausea or vomiting
  • Confusion or difficulty concentrating
  • Seizures
  • Sleepiness or difficulty waking
  • Sensitivity to light
  • No appetite or thirst
  • Skin rash (sometimes, such as in meningococcal meningitis)

While most forms of meningitis are viral, other forms can be caused by fungus, amoebas and bacteria. Bacterial meningitis is highly fatal without proper and prompt medical treatment. It is often diagnosed with a spinal tap. Meningitis vaccines only protect against bacterial meningitis, meaning that many people are still susceptible to the inflammation of the meninges caused by those other viruses, fungi, parasites and amoebas.

While any form of meningitis can be deadly, this amoebic meningitis is extremely dangerous due to the fact that there is no clear treatment available. Antibiotics and antiviral medications do nothing to combat amoebic meningitis.

The Mayo Clinic notes that “millions of people are exposed to the amoeba that causes naegleria infection each year, but only a handful of them ever get sick from it.” It is unclear as to why some people develop this particular form of meningitis when exposed, while others do not.

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