The Brief A Marysville teenager has died from the flu, the first pediatric flu-related death in Washington this season. A young teenager from Marysville died from the flu, according to the Snohomish County Health Department. Officials with the Washington State Department of Health (DOH) said this is the first pediatric flu-related death of the 2025-2026 season. "It’s always another level of tragedy when a child dies from flu," said Dr. James Lewis, health officer of the Snohomish County Health Department. Washington State Department of Health flu vaccine statisticsSo far this season, 222 people in Snohomish County were hospitalized due to flu symptoms.