Background
Local public health officials in King County are investigating a confirmed measles case in an adult who traveled through Seattle-Tacoma International Airport (SEA) on January 10, 2025, while infectious. The individual is a resident of Alaska and was likely exposed to measles while traveling abroad. Anyone who was at the following locations during the times listed could have been exposed to measles:
| Date | Time | Location |
| 1/10/25 | Approximately 2:30 p.m. – 8:00 p.m. | Seattle-Tacoma International Airport, S Concourse (Gate S8), to International Arrivals Facility through Customs, Baggage Claim (Carousel 21), then exiting to connect at D Concourse (Gate D7) |
See the King County post HERE
Requested actions
Immediately report suspected measles cases. Call the reporting line: 360-778-6150.
Consider measles in patients with these symptoms:
- Prodrome of fever, cough, coryza, and conjunctivitis for 2–4 days.
- Generalized maculopapular rash. Typically begins on the face at the hairline and spreads downward to the neck, trunk, and extremities.
- Koplik spots may appear on the buccal mucosa 1–2 days before the rash.
- Patient typically appears very ill.
- Suspected Measles Case Checklist may help with clinical evaluation.
Immediately isolate patients with suspected measles:
- Instruct reception and triage staff to identify patients with measles symptoms.
- Patients with suspected measles should wear a mask covering their nose and mouth.
- Patient should remain masked during the entire visit.
- Immediately triage the patient away from the waiting area.
- Immediately room the patient and close the door.
- Place the patient in negative pressure isolation, if available.
- The exam room door should remain closed.
- Only staff with documented immunity to measles should enter the patient’s room.
- All staff—even those with immunity—should wear PPE (personal protective equipment).
- Modified measles cases have occurred in vaccinated healthcare workers with documented immunity.
- After the patient is discharged, do not enter the room for 2 hours.
Collect specimens from patients with suspected measles for diagnostic testing:
- For PCR (polymerase chain reaction) and virus isolation:
- Nasopharyngeal swab placed in VTM (viral transport media).
- Urine (minimum 20 mL) in a sterile, leak-proof container.
- For measles IgM (immunoglobulin M) serology:
- Serum (minimum 1 mL) in a red top or red-grey top tube.
While the patient is still in the office, call Whatcom County Health and Community Services. We will coordinate transporting the specimen to Washington State Public Health Lab.
Questions?
Contact Whatcom County Health and Community Services at 360-778-6100- 360-778-6100 Main Call Line – available M-F 8:30am to 4:30pm.
- Afterhours Answering Service – available after 4:30pm and weekends, call 360-778-6100 and press 2 to be connected to the on-call manager or health officer.
- 360-778-6150 Communicable Disease Report Line – 24 hours a day 7 days a week
- 360-778-6103 Confidential Communicable Disease Fax – 24 hours a day 7 days a week
- 509 Girard Street, Bellingham WA 98225