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About The Flu

Influenza, more commonly called the flu, is a highly contagious respiratory illness. Flu seasons can be unpredictable and severe. Hospitalizations and deaths related to flu occur every year in Snohomish County, yet less than half of all adults get vaccinated yearly as recommended.

Snohomish County Influenza Surveillance Reports

The following report is updated weekly on Fridays, providing a snapshot of flu activity in Snohomish County:

Flu symptoms

Different viruses cause the flu and the common cold, but they can be very similar. The flu tends to be worse than the common cold, with more intense symptoms including

  • Fever
  • Cough
  • Sore throat
  • Runny or stuffy nose
  • Body aches
  • Fatigue (tiredness)
  • Headache
  • Vomiting or diarrhea (more common in kids than adults)

New flu viruses continue to develop and affect the health of our community. You can help protect yourself and your family from the flu by getting vaccinated, washing hands frequently, covering coughs, and staying home when sick.

Flu treatment

If you are sick with the flu, you may be ill for a week or longer. Most children and adults with the flu who are generally in good health will recover without needing to visit a health care provider. Things to remember if you or a loved one are sick:

  • Please stay home, except if you need medical care or other necessities
  • If you leave the house to seek medical care, wear a facemask.
  • Cover your coughs and sneezes with a tissue or the sleeve of your elbow.
  • Drink plenty of fluids and rest as much as possible.
  • Wash your hands frequently with warm water and soap or use a hand sanitizer.
  • Do not return to work or school until your fever is gone for at least 24 hours without the use of fever-reducing medicine like acetaminophen (Tylenol) or ibuprofen (Motrin).

When to Seek Medical Care

If you are pregnant or have an underlying health condition, call your health care provider to get advice on whether you need to be seen.
RESOURCE: Home vs. Hospital - When to Seek Care (PDF)

If you become ill and experience any of the following warning signs, please seek emergency care:

  • Fast breathing or trouble breathing
  • Bluish or gray skin color (call 911 immediately)
  • Not able to drink or keep liquids down
  • Not waking up or not interacting
  • Sudden dizziness or confusion
  • Being so irrnitable that the child does not want to be held
  • Fever in infants younger than 3 months old

Special Notices from Providers

Due to the severe flu season, the following providers have notified us of extended hours/services as follows:


Did you know?
The 1918 flu pandemic (January 1918 – December 1920) infected 500 million people across the world and resulted in the deaths of 50 to 100 million (three to five percent of the world's population), making it one of the deadliest natural disasters in human history.