Gov. Ige Steps Up Effort to Prevent Rat Lungworm

August 2, 2017, 3:33 PM HST · Updated August 3, 5:22 AM
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Gov. David Ige, with the Hawai‘i Department of Health and the Hawai‘i Department of Agriculture announced today the state’s plans to place a stronger emphasis on the prevention of rat lungworm disease.

Rat Lungworm can be caught from not properly washing produce. Photo Courtesy Maui Invasive Species Committee

This year, the state confirmed a total of 15 cases of the disease, which is the highest number of cases reported in the state over the last decade.

“We are bringing together local experts from relevant fields to increase public awareness, improve our response activities, and explore ways to control and treat the disease,” said Gov. Ige. “They will work together with the Joint Task Force we established last year to step up prevention efforts beyond Hawai‘i Island, where the first cases were reported.”

Dr. Kenton Kramer, Associate Professor of the Department of Tropical Medicine, Medical Microbiology and Pharmacology with the University of Hawai‘i John A. Burns School of Medicine said, “The Joint Task Force to combat rat lungworm disease will reconvene in August. Experts from the medical, scientific, environmental, and public health communities will collaborate to develop guidelines for schools, farms, food establishments, physicians and other groups on best practices to prevent, control, and treat rat lungworm disease.”

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The 2017 Hawai‘i State Legislature appropriated $1 million ($500,000 over two years) to the DOH to increase public education and improve control and prevention of rat lungworm disease. The funding will make possible a statewide media campaign in partnership with the Hawai‘i Association of Broadcasters to build public awareness of ways to prevent the spread of the parasitic disease.

Health Director Dr. Virginia Pressler said, “We appreciate the Legislature’s support in allowing the state to accelerate our efforts on this important initiative. The funds will provide much needed resources for our public health communications efforts as well as strengthen our disease investigation and vector control measures for rat lungworm disease.”

In addition to a statewide public awareness campaign, the DOH will work in partnership with the US Centers for Disease Control and Prevention, the University of Hawai‘i, HDOA, and other agencies to conduct a targeted rat, slug and snail study to identify disease routes and provide data on disease risks from these vectors. Officials say that a statewide study of this kind has never been conducted in the state before because of limited resources and that findings from the study will guide vector control activities for rat lungworm prevention.

Funding from the Legislature will also support two temporary full-time staff positions to coordinate prevention efforts between county, state, federal, and private sector partners.

The DOH’s food safety inspectors and vector control staff are currently collaborating with HDOA to investigate any reports of produce shipments from any farmer or vendor (local or mainland) with an infestation of slugs or snails. If the shipment is traced to a local farm, inspectors work with the farmer to ensure proper pest reduction measures are implemented.

Rat lungworm disease is caused by a parasitic roundworm called Angiostrongylus cantonensis. The parasite can be passed from the feces of infected rodents to snails, slugs and certain other animals, which become intermediate hosts for the parasite. People can become infected when they consume infected raw or undercooked intermediate hosts (slugs, snails, freshwater prawns, frogs, crayfish, and crabs).

Although the rat lungworm parasite has been found in slugs and snails throughout the state, Hawai‘i Island has experienced the majority of the confirmed cases. Some infected people don’t show any symptoms or have mild symptoms. For others, the symptoms can be much more severe and debilitating, and can include headaches, stiffness of the neck, tingling or pain on the skin or in extremities, low-grade fever, nausea, and vomiting. Sometimes, a temporary paralysis of the face may occur, as well as light sensitivity. This infection can also cause a rare and serious type of meningitis (eosinophilic meningitis).

To prevent the spread of rat lungworm infection, the public is urged to take these important steps:

Always practice safe eating habits by inspecting, thoroughly washing, and properly storing raw produce, especially leafy greens, regardless of where it came from, and/or cooking it properly to kill any parasites. Washing raw vegetables and fruits thoroughly under running water before eating not only prevents rat lungworm, but also rinses off other contaminants.

Eliminate snails, slugs and rats — all of which are potential vectors for the disease — both around residential home gardens and agricultural operations of all scales.

Prevent the consumption of snails and slugs by covering all containers, from water catchment tanks to drink and food dishes. Supervise young children while playing outdoors to prevent them from putting a slug or snail in their mouths.

For more information on preventing rat lungworm disease, go to the DOH website.


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