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For local influenza activity and surveillance information, please click here.


Influenza General Information Influenza (the flu) is a contagious respiratory illness caused by influenza viruses.  It can cause mild to severe illness, and at times can lead to death.  Some people, such as older people, young children, and people with certain health conditions are at high risk for serious flu complications.  The best way to prevent the flu is by getting vaccinated each year.  The Centers for Disease Control and Prevention (CDC) and the Douglas County Health Department  (DCHD) recommend that everyone over 6 months of age should get vaccinated to protect themselves and others from the flu.

The upcoming season's flu vaccine will protect against the three (trivalent vaccine) or four (quadrivalent) influenza viruses that research indicates will be the most common during the season.  This includes an influenza A (H1N1) virus, an influenza A (H3N2) virus, and one or two influenza B viruses, depending on the formulation.

Symptoms of Seasonal Influenza

All types of flu can cause:

  • Fever
  • Coughing and/or sore throat
  • Runny or stuffy nose
  • Headache
  • Muscle or body aches 
  • Chills
  • Fatigue

In addition, some people may experience vomiting and diarrhea, however, this is more common in children than adults.

How to Prevent Catching and Spreading the Flu

  • Cover your mouth and nose when you cough or sneeze
  • Wash your hands often with soap and water, or use an alcohol-based sanitizer
  • Avoid touching your eyes, nose or mouth
  • Try to avoid close contact with sick people
  • Stay home if you are sick until at least 24 hours after you no longer have a fever (100 degrees F)
  • Follow public health advice regarding school closures, avoiding crowds and other social distancing measures
  • Get vaccinated.  Yearly flu vaccination is the best way to prevent getting the flu.



Current Douglas County Flu Activity and Surveillance (to sign up for email notification of influenza and other surveillance reports, click here)


Current Influenza Surveillance Report  (Updated 4-16-2019)


Information for Individuals and Families

Information for Businesses

Information for Health Care Providers

Long Term Care Facilities 


Health Education Resources

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