Fifth measles case in WA confirmed, locations revealed
Apr 23, 2025, 7:14 AM | Updated: Apr 24, 2025, 6:09 am

A one year-old is held by his mother while he receives an MMR vaccine. (Photo: Jan Sonnenmair, Getty Images)
(Photo: Jan Sonnenmair, Getty Images)
An infant in King County contracted measles, making it the fifth case this year in Washington.
Public Health – Seattle and King County reported that the infant traveled through Seattle-Tacoma International Airport (Sea-Tac) last Tuesday while infectious with measles and was at some specific locations at Seattle Children’s Hospital while contagious.
The infant had not yet been vaccinated against the measles and was likely exposed during a recent trip out of the country.
“Measles outbreaks are happening in every part of the world. If you are planning international travel, it’s important to speak with your healthcare provider about what vaccines may be needed,” Elysia Gonzales, medical epidemiologist for Public Health – Seattle & King County, said. “Children need two doses of MMR vaccine: the first dose at age 12-15 months, and the second dose at age 4-6 years. Babies ages 6-11 months should get an early dose if traveling internationally. Adults should also check to see if they are immune to measles.”
Of the five measles cases in Washington this year, three were infants.
The specific locations where the infant with measles was
On April 15, the infant and their family were at Sea-Tac Airport from 4:50 p.m. until 7:45 p.m. They were at S Concourse (Gate S10), the international arrivals facility for customs, and baggage claim (Carousel 21) before exiting through Gina Marie Hall (south end of main terminal).
Two days later, the family went to Seattle Children’s Hospital’s Emergency Department from 8:45 a.m. to 1 p.m. and again from 5:30 p.m. until 7:45 p.m. Beyond the waiting room, the infant was also in the Forest B level 1 lobby and its pharmacy.
The next day, April 18, the family returned to Seattle Children’s Hospital’s Emergency Department. From 11:50 a.m. until 3:30 p.m., the infant and the family were in the Ocean 6, 7, and 8 lobbies, the Ocean 7 Starbucks, the Ocean 8 hallway to urgent care, and the Ocean 8 urgent care lobby.
On April 20, from 12:05 pm until 2:25 pm the family visited Ocean 6, 7, and 8 lobbies, the Ocean 8 hallway to urgent care, and the Ocean 8 urgent care lobby at the Seattle Children’s Hospital’s Emergency Department.
If you were at the locations at the times listed above and are not immune to measles, the most likely time you would become sick would be between April 22 and May 11. People who are immuno-compromised may take longer to experience symptoms.
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