This page is for healthcare providers. For more general information, see our Influenza page.
Influenza is more than a bad cold. It's a contagious respiratory infection caused by various strains of influenza virus. It can lead to life-threatening complications. Each year, seasonal influenza epidemics cause thousands of deaths and hospitalizations. People with long-term health conditions are especially at risk.
Getting vaccinated protects you, your family and your patients. Annual vaccination is the single most important tool in preventing influenza-related deaths.
Sign up to receive regular influenza updates. Go to our eNotifications page and choose Health Advisories and Disease Alerts.
- Influenza page—CDC.
- Rapid influenza diagnostic tests—Can be useful in clinical decision-making but sensitivity is low (50-70%). Might not detect novel or variant influenza. Negative tests don't rule out influenza.
- Prescribing antiviral medication.
- State data—Washington State Department of Health.
- National data—CDC.
- King County data—Public Health–Seattle & King County.
- Virology data—University of Washington.
- Influenza vaccine information page.
- Sample standing orders for influenza immunization for children and teens.
- Sample standing orders for influenza immunization for adults.
- Vaccine Information Statements (available in multiple languages)—Immunization Action Coalition.
- Healthcare worker immunization toolkit.