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  • Provider Alert: Updated Guidance for Influenza Testing and Subtyping

    Situation Summary Emergency Department visits for influenza are currently rising in Washington, indicating an early start to the 2026-2027 influenza season. Be alert for patients with seasonal as well as novel influenza viruses such as highly pathogenic avian influenza (HPAI). The Centers for Disease Control and Prevention (CDC) and the Association of Public Health Laboratories…

  • 03/16/26 Provider Alert: respiratory syncytial virus (RSV) season has been extended through April 30, 2026

    03/16/26 Provider Alert: respiratory syncytial virus (RSV) season has been extended through April 30, 2026

    The respiratory syncytial virus (RSV) season has been extended through April 30, 2026. Please continue to administer nirsevimab or clesrovimab to all eligible patients through April 30th. Current Situation RSV activity in Washington began later than usual this season, with emergency department visits in the state reaching the activity threshold in December 2025, compared to…

  • Washington confirms measles outbreak

    Washington confirms measles outbreak

    Washington State Department of Health (DOH) confirmed a measles outbreak in Snohomish County—the first in the state since 2023. Three unvaccinated children ages 23 months to 9 years tested positive for the highly contagious disease. Additionally, one person in Kittitas county tested positive. The outbreak comes as measles cases are rising across the United States,…