Last Update: August 13, 2026 at 4:00 p.m.
Measles is a vaccine-preventable disease that can spread very easily between people who are not immune to the disease. Cases of measles are rising across the U.S. and in many countries around the world. We are tracking measles cases and outbreaks in Washington state. All data are preliminary and subject to change.
2026 Measles Cases
Case Counts
Number of Cases
Percent of Total Cases
Total 2026 Confirmed Cases
55
100%
Hospitalized*
4
7%
Deaths
0
0%
*Hospitalized refers to the total number of measles cases who were hospitalized related to their measles illness.
2026 Measles Cases by County of Residence
County of Residence
Number of Cases
Percent of Total Cases
Clark
18
33%
Snohomish
14
25%
Kittitas
7
13%
Walla Walla
7
13%
King
3
5%
Stevens
3
5%
Grant
2
4%
Spokane
1
2%
Total Measles Cases
55
100%
Refer to the Local Health Jurisdiction measles webpages linked above for more information about measles cases in that county.
2026 Measles Cases by Age
Age Range
Number of Cases
Percent of Total Cases
Under 5 years
12
22%
5-17 years
28
51%
18+ years
15
27%
Total Measles Cases
55
100%
2026 Measles Cases by Vaccination Status
Vaccine Status
Number of Cases
Percent of Total Cases
Unvaccinated
49
89%
1 dose of measles-containing vaccine*
0
0%
≥2 doses of measles-containing vaccine
1
2%
Unknown
5
9%
Total Measles Cases
55
100%
*Measles-containing vaccines include MMR (Measles, Mumps, Rubella), MMRV (Measles, Mumps, Rubella, Varicella), and others.
Measles Public Exposure Location Map
Public Measles Exposure Locations in Washington State Map – These are public locations in Washington state where people confirmed to have measles visited while they were likely contagious for measles. Check this map to see if you might have been exposed to measles at a public location in Washington state.
Subscribe to email alerts and get notified when an exposure is reported.
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News Releases and Alerts
Date
Title
August 11, 2026
Public Health investigating confirmed measles case in Clark County child
July 24, 2026
Six additional measles cases in Clark County, no new public exposure sites
July 22, 2026
Potential Exposure to Measles from Visitor at MultiCare Yakima Memorial Hospital
July 22, 2026
Public Health investigating confirmed measles case in Clark County
April 30, 2026
Recent measles cases in Washington raise concern about undetected community spread
April 28, 2026
Second Measles Case Identified in Walla Walla County
April 23, 2026
Potential Measles Exposure at Valley View Elementary School
April 14, 2026
New Confirmed Case of Measles in Kittitas County
April 13, 2026
Kittitas County Has Had 4 Cases of Measles in 2026
April 10, 2026
Measles case identified in a King County infant
April 3, 2026
First Identified Measles Case of 2026 in Walla Walla County
April 3, 2026
Confirmed Case of Measles in Kittitas County
April 1, 2026
Two measles cases identified in King County connected to international travel
March 26, 2026
Measles Exposure in Spokane County
March 18, 2026
Two Confirmed Measles Infections in Grant County
March 5, 2026
Measles remains a growing concern in Washington as U.S. surpasses 1,100 cases in 2026
February 12, 2026
Additional measles cases reported in Stevens County, no local public exposure sites
February 3, 2026
Additional measles cases reported in Clark County, no new public exposure sites
February 2, 2026
Active Response to Measles Case in Kittitas County Ends
January 28, 2026
Snohomish County Confirms Three New Measles Cases
January 23, 2026
Public Health investigating confirmed measles case in Clark County
January 20, 2026
Provider Health Alert: Verifying Measles Immunity Status & Interim Expedited MMR Guidelines, Snohomish County
January 16, 2026
Washington confirms its first measles outbreak since 2023
January 16, 2026
Confirmed Case of Measles in Kittitas County
January 15, 2026
Measles Outbreak Declared in Snohomish County After 3 New Cases
January 8, 2026
Measles Cases in Visitors to Snohomish and King Counties: Multiple Locations of Possible Exposure
2025 Washington Measles Cases
In 2025, there were 12 cases of measles confirmed in Washington state. Last year, no cases of measles were linked to a Washington measles outbreak. All cases were related to travel outside of our state.
Age
Number of Cases
<5 years
5
5–17 years
1
≥18 years
6
Total Measles Cases in Washington, 2025
12
For measles data from 2024 and earlier, see our Annual Communicable Disease Reports.
More Resources
For the Public
Measles - General information about measles and Washington state resources.
Measles Cases and Outbreaks, CDC - Measles cases reported in the United States.
For Healthcare Providers
Measles - Notifiable Condition - Measles reporting and testing resources for healthcare providers and public health partners.
Measles Provider Evaluation Worksheet (PDF) - Fillable worksheet for providers to use when assessing a patient with suspected measles.
Interim Pediatric Measles Outbreak Vaccination Recommendations (PDF) - Interim pediatric measles vaccination guidance from WA DOH.
