Fourth King County measles case confirmed this month

Public Health – Seattle & King County is investigating a new measles case with possible exposures in King County.

The King County resident, a woman in her 30s, spent time at sites in the county before she knew she was contagious. This is the fourth King County case identified this month, bringing the total to seven recent measles cases in Washington state residents.

At this point in the investigation, the information on the recent cases points to a common exposure from an unidentified person contagious with measles on April 25, 2019 at Sea-Tac International Airport, likely in the morning. Health officials have no reason to believe that there is currently an increased risk of getting measles by visiting the airport.

Locations of potential exposure to the public of this measles case in King County

Transmission of measles can occur before people know they have the disease, before any rash appears. Before the measles diagnosis was made, the infected individual was in the following public locations:

May 10, 4 a.m.-2 p.m., Hudson Alki Bakery Store, Sea-Tac International Airport (pre-security Ticketing Level by B gate exit)

May 11, 4 a.m.-2:05 p.m., Hudson Alki Bakery Store, Sea-Tac International Airport (pre-security Ticketing Level by B gate exit)

May 12, 4 a.m. -2:05 p.m., Hudson Alki Bakery Store, Sea-Tac International Airport (pre-security Ticketing Level by B gate exit)

May 13, 4 a.m.-2:10 p.m.,Hudson Alki Bakery Store, Sea-Tac International Airport (pre-security Ticketing Level by B gate exit)

May 14, 10:40 a.m. -1:45 p.m., Valley Family Medicine, 3915 Talbot Road S., Suite 401, Renton

May 15. 10:40 a.m.- 2 p.m., Valley Family Medicine

These times include the period when the person was at the location and two hours after. Measles virus can remain in the air for up to two hours after someone infectious with measles leaves the area. Anyone who was at these locations during the times listed could have been exposed to measles.

As more locations are identified, they will be added to a list of all measles cases and locations of exposure in King County at kingcounty.gov/measles/cases.