The Hawaii Department of Health announced on Mar. 17 that a wastewater sample collected from Kauaʻi County tested positive for the measles virus. The sample, taken on Feb. 25 at a site in East Kauaʻi County, was confirmed by advanced sequencing and prompted statewide monitoring efforts.
This detection is significant as it serves as an early warning for potential cases, allowing health officials to increase awareness and surveillance before clinical cases are identified. According to the department, “A measles signal in wastewater does not confirm a clinical case or indicate community transmission. Instead, it serves as an early indicator prompting awareness and monitoring for potential cases.”
A confirmed case of measles was reported in Hawaii on March 7 involving a visitor from the continental United States who had traveled to Oʻahu and Hawaiʻi Island between Feb. 26 and March 4. However, officials said this case does not align with the timeline or location of the Kauaʻi wastewater detection.
The department advises anyone who has traveled to areas experiencing measles outbreaks to consult their doctor if symptoms develop. Measles symptoms include high fever, cough, runny nose, red eyes, and a rash that spreads from the head downward. The disease can cause serious complications such as pneumonia and neurological illness.
The Hawaii State Department of Health contributes to community well-being by promoting health education on vaccination and disease outbreaks through its Disease Outbreak Control Division, according to the official website. The agency aims to safeguard residents’ health through prevention efforts and environmental protection according to its official website. It operates under a director supported by deputy directors managing key programs as noted online, with services extended across multiple islands as outlined on its website.
Wastewater testing is conducted weekly across Hawaii using both dPCR testing at the State Laboratories Division (SLD) and advanced sequencing at the University of Missouri. While recent dPCR tests did not detect measles, sequencing identified genotype D8—associated with wild-type infections—in Kauaʻi’s sample from Feb. 25.
The SLD program collaborates nationally to strengthen environmental monitoring for infectious diseases through projects analyzing samples for viruses affecting humans, animals, plants, and microbes. The department is also recognized for public health preparedness via its Office of Public Health Preparedness coordinating disaster response as detailed online.
Officials urge everyone to stay current with their measles-mumps-rubella (MMR) vaccinations since infants under one year are especially vulnerable but may be eligible for early vaccination if exposed. The Hawaii State Department of Health operates as a public health agency focused on comprehensive services for wellness statewide according to its official website.
