Measles Case Reported at Seattle-Tacoma International Airport

SEATTLE — Health officials announced Friday that a case of measles has emerged in a traveler passing through Seattle-Tacoma International Airport.

The individual was present at the airport between 4 p.m. and 7 p.m. on January 22, 2026.

During that timeframe, the person was near Gate A12 in A Concourse, then traveled to the International Arrivals Hall at baggage claim 22, before exiting on the lower level at the south end of the main terminal.

According to health officials, those who are vaccinated generally have strong protection against measles.

People who were in those areas at the indicated times, and who lack immunity to measles, could start showing symptoms between January 29 and February 12, 2026, which is considered the typical period for illness to develop after exposure.

This case was officially reported on February 12, 2026.

In addition, officials pointed out that Snohomish County is currently dealing with a measles outbreak.

The Snohomish County Health Department confirmed three more measles cases since the outbreak was declared two weeks ago, raising the total to six cases as of Wednesday.

Guidelines for Potential Exposure

• Check if you have been vaccinated for measles or had the disease before. If you’re uncertain about your immunity, start with your vaccination records to see if you received the MMR vaccine.
• If you previously underwent testing for measles, look for those lab results. If you lack records of vaccination or a blood test confirming immunity, it’s advisable to receive the MMR vaccine. Getting another dose is harmless, even if you were vaccinated but lack documentation.
• Residents of Snohomish County can contact local pharmacies and clinics to inquire about vaccination options. In Washington, children under 19 can get vaccinated for free, and most insurance plans, including Medicare Part B, will cover the cost for adults.
• If you were born after 1956, are unimmunized, and have never had measles, consider quarantining for 21 days following exposure.
• Contact a healthcare provider promptly if you develop a fever or an unexplained rash.
• To prevent potentially spreading measles, do not visit a clinic or hospital without calling ahead to inform them that you wish to be assessed for measles after possible exposure.