Maui News


January 22, 2009, 8:40 AM HST
* Updated January 23, 10:19 AM
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The Hawai`i State Department of Health (DOH) is advising the public to wash produce thoroughly to help prevent exposure to pesticides, bacteria, and parasites.  The DOH identified six probable cases of illness caused by angiostongylus, or rat lung worm in 2008.  All individuals were residents of the island of Hawai`i and regularly ate fresh raw vegetables from backyard gardens. The parasite causes a rare form of meningitis, called eosinophilic meningitis or angiostrongyliasis. The condition is also referred to as “rat lung worm” because rats are part of the life cycle of the parasite. The parasite is found in snails, slugs, and freshwater prawns, crabs fish, and possibly the flatworm in Hawai`i. Eating uncooked snails, slugs, freshwater prawns and fish can cause the rare infection, which can lead to serious illness.  Dr. Sarah Park with the DOH Disease Outbreak Control Division said, “It’s important to always wash raw vegetables and fruits thoroughly before eating them to remove insects, parasites, bacteria and other possibly harmful contaminants.”

Signs of rat lung worm disease can include severe headaches, nausea, vomiting, neck stiffness, and other problems related to the brain and spinal cord. Most patients recover from the infection without treatment. If you think you may have angiostrongyliasis, see your health care provider and let him/her know of your exposures.

The DOH warns that freshwater prawns, crabs or fish and mollusks such as snails should be cooked thoroughly before eating. Sufficient heat (boiling 3-5 minutes) kills the parasites.  Thoroughly wash fresh vegetables and fruit before consuming and visually inspect to be sure they are free of slugs or snails. Controlling rodents, snails and slugs around your home will also decrease the risk of exposure.

For more information call the DOH East Hawai`i District Health Office at (808) 933-0912 or the West Hawaii District Health Office at (808) 322-4877.

Additional information is also available on the Centers for Disease Control and Prevention webpage at:


(Posted:  Thursday, January 22, 2009)

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