Primary amoebic meningoencephalitis primary prevention

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Personal actions to reduce the risk of primary amoebic meningoencephalitis should focus on limiting the amount of water going up the nose and lowering the chances that Naegleria fowleri may be in the water. Routine, enhanced education of the public in advance of the summer swim season might be helpful.

Primary Prevention

Measures to prevent primary amoebic meningoencephalitis include the following:

• Avoid water-related activities in bodies of 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.
• Avoid putting your head under the water in hot springs and other untreated thermal waters.
• Only sterile, distilled, or lukewarm previously boiled water should be used for nasal irrigation or sinus flushes. Use water that has been:

Previously boiled for 1 minute (at elevations above 6,500 feet, boil for 3 minutes) and left to cool.

Filtered, using a filter with an absolute pore size of 1 micron or smaller.

Purchased with a label specifying that it contains distilled or sterile water.