In October 2024, Public Health Seattle King County (PHSKC) officials investigated an outbreak of norovirus associated with McDonald’s Restaurant located at 8515 124th Ave NE in Kirkland, WA. Three people who did not know each other reported illness after eating at the restaurant between October 23 and October 26, 2024. No one was hospitalized and no one died. Two of the three people who became sick underwent testing. Both people tested positive for norovirus.

PHSKC visited the restaurant on October 29, 2024 and confirmed that no restaurant workers reported being sick in the past two weeks. Investigators did not find any unsafe food practices related to the spread of PHSKC revisited the restaurant on November 1, 2024, and asked them to follow their norovirus cleaning protocols and complete a deep cleaning of the restaurant.