In May 2018 Public Health Seattle King County (PHSKC) investigated an outbreak of norovirus associated with Italianissimo Ristorante located in Woodinville, Washington. Investigators learned of 29 people from separate meal parties who became ill after consuming food and beverage at the restaurant between May 11-15. Anecdotally, the restaurant received at least eight complaints of illness which likely includes ill people previously reported to PHSKC. Additionally, PHSKC identified at least 5 employees who experienced similar symptoms back to May 13. No one was hospitalized and no one died.

On May 16 PHSKC Environmental Health investigators closed the restaurant for a thorough cleaning and disinfection. The restaurant will reopen after public health confirms proper cleaning and disinfection.