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Health Department Confirms Case of Brain-Destroying Amoeba Found in Hillsborough

Brain Eating amoeba | Naegleria fowleri | Health

The brain infection, which is rare, is usually fatal. The amoeba is commonly found in warm freshwater such as lakes, rivers, ponds and canals. 

HILLSBOROUGH COUNTY – The Florida Department of Health has confirmed one Florida case infected with Naegleria fowleri in Hillsborough County.

Naegleria fowleri is a microscopic single-celled living amoeba. The amoeba can cause a rare infection of the brain called primary amebic meningoencephalitis that destroys brain tissue and is usually fatal. The amoeba is commonly found in warm freshwater such as lakes, rivers, ponds and canals.

Infections can happen when contaminated water enters the body through the nose. Once the amoeba enters the nose, it travels to the brain where it causes PAM. Infections usually occur when temperatures increase for prolonged periods of time, which results in higher water temperatures and lower water levels.

The peak season for this amoeba is July, August and September. Naegleria fowleri is found in many warm freshwater lakes, ponds and rivers in the U.S., but is more common in southern states. The low number of infections makes it difficult to know why a few people have been infected compared with the millions of other people who used the same or similar waters across the U.S.

Though there are only 37 reported cases with exposure in Florida since 1962,DOH cautions those who swim and dive frequently in Florida’s lakes, rivers and ponds during warm temperatures about the possible presence of Naegleria fowleri. Adverse health effects on humans can be prevented by avoiding nasal contact with the waters, since the amoeba enters through the nasal passages.

As a precaution, health officials recommend the following:

  • Avoid water-related activities in bodies of warm freshwater, hot springs and thermally polluted water such as water around power plants.
  • Avoid water-related activities in warm freshwater during periods of high water temperature and low water levels.
  • Hold the nose shut or use nose clips when taking part in water-related activities in bodies of warm freshwater such as lakes, rivers, or hot springs.
  • Avoid digging in or stirring up the sediment while taking part in water-related activities in shallow, warm freshwater areas.
  • Exposure to the amoeba may also happen when using neti pots to rinse sinuses of cold/allergy-related congestion or conducting religious rituals with tap water. Use only boiled and cooled, distilled, or sterile water for making sinus rinse solutions for neti pots or performing ritual ablutions.

If you experience any of these symptoms after swimming in any warm body of water, contact your health care provider immediately: headache, fever, nausea, disorientation, vomiting, stiff neck, seizures, loss of balance, or hallucinations. It is essential to seek medical attention right away, as the disease progresses rapidly after the start of symptoms.

Remember, this disease is rare and effective prevention strategies can allowfor a safe and relaxing summer swim season.

For the latest information about the amoeba, go to the CDC’s website at

Health | Amoeba | Brain Infection | Tampabay News | News Tampa

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