Posted May 26, 2023. Past health advisories and alerts are archived for historical purposes and are not maintained or updated.
Public Health - Seattle & King County and the Washington State Department of Health have identified a confirmed case of measles in a King County resident with unknown vaccine history. There was no specifically identified exposure, and the infection appears to be U.S. acquired (no international travel). The case’s rash onset was on 5/15/23. During the case’s likely exposure period (7-21 days prior to rash onset, 4/24/23 - 5/8/23), they were in Pennsylvania from 4/18/23 through 4/30/23.
Air travel during likely exposure period:
Communication with PA DOH and Philadelphia DPH indicated no known confirmed or suspect measles cases in their jurisdictions. The last reported measles case in PA was in October 2019. In Washington State, the last reported measles case was on 1/20/23. This investigation is ongoing and pertinent updates will be shared.
The individual with measles visited the following public locations in Seattle, WA during their infectious period before receiving the diagnosis of measles. Public health professionals should be aware that members of the public may have been exposed to measles at:
Up to date information on public exposure locations can be found at New Case of Measles in King County .
Please contact the Spokane Regional Health District to report any suspected measles cases at (509) 324-1449 or by encrypted email at cdepi@srhd.org.
