Kauai Reports First rat Lungworm case in Six Years
KAUAI, HI - Health officials confirmed a new case of rat lungworm disease on Kauai Monday, marking the island’s first reported infection since 2019. The Hawaii Department of Health announced the diagnosis, reminding residents of the ongoing risk of this parasitic disease statewide.
Rat lungworm disease, formally known as neuroangiostrongyliasis, is endemic too all Hawaiian Islands. Infection typically occurs when individuals accidentally ingest raw or undercooked snails or slugs carrying the Angiostrongylus cantonensis parasite, which can then affect the brain and spinal cord.
The adult patient, a Kauai resident with no recent off-island travel, experienced symptoms including headache, nausea, vomiting, neck stiffness, and sensitivity to light. While the diagnosis has been confirmed, the exact source of the infection remains unidentified.
“Thoroughly inspecting and washing all fresh fruits and vegetables under clean, running water is the most effective way to reduce the risk of rat lungworm disease,” stated State Epidemiologist Dr. Sarah Kemble. “Small slugs and snails on produce can be tough to see. Cooking food thoroughly also kills the parasite that causes rat lungworm disease.”
Between 2014 and 2025, Hawaii has recorded a total of 102 confirmed cases of rat lungworm disease, with the majority occurring on Hawaii Island (78 cases). Other cases were reported in Maui County (13), Oahu (7), and previously on Kauai (3). Approximately 75% of confirmed cases have required hospitalization, and 84% of those infected have been Hawaii residents.
Anyone experiencing headaches, neck stiffness, or neurological symptoms is urged to contact their physician.
Residents are also advised to control pests around homes,gardens,and farms,replace water filters,and ensure water tanks are properly sealed as preventative measures.
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