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Influenza spreads readily from person to person in schools, workplaces and homes. Everyone 6 months of age and older should get an annual flu vaccine to prevent sickness, healthcare visits, hospitalizations, and deaths from influenza.

Protection lasts throughout the flu season, which usually peaks in January or February and continues into the spring. Some children and adults may be eligible to receive nasal spray flu vaccine.

People with egg allergy may also be eligible to receive flu vaccine. Talk with your healthcare provider or pharmacist about which flu vaccine is recommended for you.

Resources on flu

Influenza in King County

Purpose of surveillance:

  • To detect the emergence of novel influenza
  • To monitor influenza activity in the community
  • To identify clusters of severe illness and outbreaks of influenza in institutional settings
  • To monitor mortality from laboratory-confirmed influenza

More information:


Link/share our site at www.kingcounty.gov/influenza

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2017-18 weekly flu surveillance reports

During the week ending February 10, 2018:

  • The percent of visits to King County emergency departments (ED) for influenza-like illness (ILI) is above baseline levels and the 5-year average for this time of year. The percent of ED ILI visits was highest among the pediatric population.
  • There were 4 new long-term care facility outbreaks and no new influenza related deaths reported. Thirty-four long-term care facility outbreaks and 22 influenza related deaths have been reported this season - both are below the 5-year average.
  • ED ILI visits appear to be on a decreasing trend, among all ages combided as well as each individual age group.
  • The University of Washington Virology lab data shows circulating influenza A, RSV, and influenza B.