Washington State Measles Outbreak
Posted on 05/23/2019
Baby with measles

Washington State Measles Outbreak

Nine new cases of measles were confirmed in Washington in May. The current outbreak began on May 9 in three Puget Sound counties (King, Pierce and Snohomish). Benton and Franklin Counties have no confirmed cases. The exposures most likely occurred at Seattle-Tacoma International Airport on Thursday, April 25.

Current information can be found at

Since January, Washington State has 81 confirmed cases of measles. Seventy-two of those cases were reported between February and April with 71 cases in Clark County and one in King County. Nearly all of the cases are among children who were unvaccinated. The best protection against measles is the MMR vaccine, which protects against measles, mumps, and rubella viruses. The MMR vaccine protects against all strains of measles including the D8 strain found in the WA state outbreak. The D8 strain is currently spreading in Eastern Europe. Make sure you’re protected–especially before international travel.

  • There is no routine need for revaccination or catch up vaccinations for measles for most adults. If a measles outbreak does occur in Benton or Franklin counties, these recommendations may change.Check your immunization records online through Wa.MyIR.net.
  • If you were born after 1956 and don’t think you ever had MMR vaccine or MMRV vaccine (measles, mumps, rubella, and varicella/chickenpox), contact your healthcare provider for immunizations or a blood test as soon as possible. If you don’t have a healthcare provider, call Benton-Franklin Health District at 509-460-4214or the Family Health Hotline at 1-800-322-2588.
  • If you think you have been exposed to measles, call your healthcare provider for advice.
  • If you become ill after a possible exposure to measles:
    • Call your healthcare provider and ask to be evaluated for possible measles.
    • Protect other people - Stay away from other people to avoid exposing them to measles.

For more information, go to https://www.doh.wa.gov/YouandYourFamily/IllnessandDisease/Measles


Measles Outbreak Cases by County - Since January 2019

County Confirmed Cases*
 Benton County 0
 Franklin County 0

*Numbers are updated weekly