EVERETT — The Snohomish County Health Department has been informed of three confirmed measles cases in visitors to the county over the holidays, the department announced in a press release Thursday.
One adult and two children — all from the same South Carolina family — were infectious from Dec. 27 through Jan. 1. The adult reported having received at least one measles vaccine and the children were unvaccinated.
The family visited multiple locations in Everett, Marysville and Mukilteo while contagious, the release said. They also traveled through the Seattle-Tacoma International Airport.
Those not immune to measles or who don’t know their vaccination status should review the list of locations the family visited, health department spokesperson Jeff Hodson said in the release:
• 1-3 p.m. Dec. 27 at McDonald’s, 530 128th St. SW., Everett
• 2-6:30 p.m. Dec. 28 at Slavic Christian Church Awakening, 4223 78th St SW., Mukilteo
• 11 a.m. to 2 p.m. Dec. 29 at Flying Squirrel Trampoline Park, 1325 SE. Everett Mall Way, Everett
• 1-3 p.m. Dec. 29 at Chick-fil-A, 8810 36th Ave., Marysville
• 1-3 p.m. Dec. 30 at Mukilteo-Clinton Ferry
• 6-9:30 p.m. Dec. 30 at Fisherman Jack’s 1410 Seiner Dr., Everett
• 6:45-9 a.m. Jan. 1 on Seattle-Tacoma International Airport rental car shuttles, going to and from the airport and the consolidated rental car facility
• 7-11:15 a.m. Jan. 1 Seattle-Tacoma International Airport N Concourse (Gate N4) and Green Train Line
The times include the two-hour period the measles virus can remain in the air, Hodson said.
Anyone who may have been exposed should find out if they have been vaccinated for measles or previously had measles, according to health department guidance. The department advises to stay up to date with the recommended number of MMR vaccinations. Call a healthcare provider if you develop a fever or unexplained rash and limit contact with others.
People who were at the locations at the listed times are most likely to become sick Jan. 4 through Jan. 22, and people who are immunocompromised may take longer to develop symptoms, according to the release.
More than 2,100 measles cases were reported in the United States in 2025, the highest level since 1992, according to the release. Since Jan. 2, the South Carolina Health Department has reported 26 new cases of measles.
Two doses of the measles vaccine provide 97% protection against the virus, and the protection lasts a lifetime, health officials said.
“Measles is one of the most contagious diseases we know, and often brings serious illness,” said Dr. James Lewis, Snohomish County health officer, in the release. “The MMR vaccine is the best way to prevent outbreaks and protect our community, especially for infants and those who cannot be vaccinated.”
Jenna Peterson: 425-339-3486; jenna.peterson@heraldnet.com; X: @jennarpetersonn.
