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October 28, 2025
New measles case in King County resident with link to previous case
Public Health – Seattle & King County was notified of a confirmed measles case in a King County adult. The individual was on the same flight as a person with a confirmed case of measles that Public Health previously announced on October, 17, 2025. We believe this latest case was exposed to measles on this flight. This latest case was at Toyota of Renton, Valley Medical Center, YangGuoFu Malatang Restaurant and Disney on Ice at ShoWare Center during their infectious period. See below for details about public exposures or visit Public Health's measles website.
This is the 12th measles case in Washington state residents this year, along with several other cases that Public Health has responded to in travelers who visited King County.
This individual was vaccinated against measles. Nationally, 92% of cases this year are among people who are unvaccinated, 4% have one dose, and 4% are people with two doses of the MMR vaccine.
Locations of potential exposure to the public
People infected with measles can spread the disease before they know they are infected and before any rash appears.
The individual was at the following public locations before being diagnosed with measles. You can also view these locations at our website. The times include the estimated period when the individual was at the location and two hours after. The measles virus can remain in the air for up to two hours after someone infected with measles leaves the area.
Anyone who was at the following locations during the times listed could have been exposed to measles:
| Date | Time | Location | Watch for symptoms until: |
|---|---|---|---|
| 10/22/2025 | 7 am – 9 pm | Toyota of Renton |
10/29/25 - 11/12/25 |
| 10/23/2025 | 7 am – 9 pm |
Toyota of Renton |
10/30/25 - 11/13/25 |
| 10/24/2025 | 7 am – 9 pm |
Toyota of Renton |
10/31/25 - 11/14/25 |
| 10/25/2025 | 4 pm – 7 pm | YangGuoFu MalaTang |
11/01/25 - 11/15/25 |
| 10/26/2025 | 11 am – 3 pm | ShoWare Center |
11/02/25 - 11/16/25 |
| 10/26/2025 - 10/27/2025 | 8:10 pm – 2 am | Valley Medical Center Emergency Department entrance and waiting rooms. |
11/02/25 - 11/17/25 |
| 10/13/2025 | 11:30am – 2:40pm | Seattle-Tacoma International Airport
|
10/20/2025 - 11/03/2025 |
What to do if you were in a location of potential measles exposure
Most people in our area have immunity to measles through vaccination, so the risk to the general public is low. However, anyone who was in the locations of potential exposure to measles around the times listed on our website should:
- Find out if you have been vaccinated for measles or have had measles previously. Make sure you are up to date with the recommended number of measles (MMR) vaccinations.
- Call a healthcare provider promptly if you develop an illness with fever or with an unexplained rash. To avoid possibly spreading measles to others, do not go to a clinic or hospital without calling first to tell them you want to be checked for measles after an exposure. It is also important to limit contact with others, especially those without known immunity.
If you were at the locations during the times listed above and are not immune to measles, the most likely time you would become sick would be between 10/29/2025 - 11/17/2025. People who are immuno-compromised may take longer to experience symptoms.
To help provide information about measles, we’ve created a number of resource materials for schools, workplaces, organizations, healthcare providers, and anyone else in the community to share. Please download and use these resources to help people in your networks learn about measles, how contagious it is, and what they can do to protect themselves and their families.
About measles
Measles is a highly contagious and potentially severe disease that causes fever, rash, cough, runny nose, and red, watery eyes. If one person has it, up to 9 out of 10 people nearby will become infected if they are not protected. It mainly spreads through the air after a person with measles coughs or sneezes.
Measles symptoms begin 7 to 21 days after exposure. Measles is contagious from about 4 days before the rash appears through 4 days after the rash appears. People can spread measles before they have the characteristic measles rash.
Measles can lead to ear infections, diarrhea, pneumonia, and rarely, encephalitis (brain inflammation) or death.
Complications from measles can happen even in healthy people, but those at highest risk include infants and children under 5 years, adults over 20 years, pregnant people, and people with weakened immune systems from medications or underlying disease.
If you are in one of these high-risk groups and were exposed to measles at one of these locations, be sure to contact your health care provider to discuss any steps you need to take to protect yourself or loved ones against complications from measles.
Measles is preventable with the safe and highly effective measles, mumps, and rubella (MMR) vaccine. Two doses of the MMR vaccine are about 97% effective at preventing measles and that protection is long lasting.
For more information about measles and measles vaccination, including where to get measles vaccinations: kingcounty.gov/measles