Health Department

Fairfax County, Virginia

CONTACT INFORMATION: Our administration office at 10777 Main Street in Fairfax is open during regular business hours 8 a.m. - 4:30 p.m., Monday - Friday. Clinic services are not offered at this location.

TTY 711

10777 Main Street
Fairfax, VA 22030

Gloria Addo-Ayensu, M.D., M.P.H.,
Director of Health

Influenza (Flu)

Woman sitting on sofa covering her nose and mouth with a tissue and reading a thermometer in her handInfluenza, also known as the flu, is a highly contagious infection of the breathing system (nose, throat and lungs) caused by flu viruses.

Seasonal flu is caused by viruses that already circulate among people. Most people have some immunity and a vaccine is available to help prevent the flu. In the United States, flu season usually starts in late fall and lasts throughout the winter, sometimes into early spring. Each year, more than 200,000 people in the U.S. are hospitalized from complications of the flu, and about 36,000 die as a result.

Flu Vaccine Clinics

Adults & Children (6mos+)

The Health Department is hosting 3 Saturday flu vaccination clinics for everyone 6 months and older.

October 3, 10am - 2pm
Joseph Willard Health Center

October 24, 10am - 2pm
Herndon Reston District Health Office

November 7, 10am - 2pm
Mt. Vernon District Health Office

Make an appointment by calling 703-246-7100.
See flyer: English | Spanish


Saturday Flu Vaccine Clinics


Adults Over 18

The Health Department and Department of Neighborhood and Community Services are offering flu vaccination clinics at select Senior Centers. High dose vaccines will not be available. Seniors needing a high dose vaccine should contact their personal physician.  Learn more.

October 6, 9am - 3:30pm
Herndon Senior Center

October 19, 9am - 3:30pm
Lincolnia Senior Center

October 26, 9am - 3:30pm
Original Mt. Vernon High School

November 2, 9am - 3:30pm
Little River Glen Senior Center

November 9, 9am - 3:30pm
Lewinsville Senior Center

Make an appointment by calling 703-246-6010.

Flu flyer


For your safety, appointments are limited, and face masks and temperature checks will be required. 


Make a plan to get immunizedMake an Appointment

Get Your Flu Shot Today. And make sure your child’s immunizations are up to date.  Find a clinic | En Español

Did You Know?

  • An annual flu vaccine is the best way to fight the flu.
  • Flu vaccine is safe and effective. 
  • Flu vaccine cannot cause the flu.
  • The Centers for Disease Control and Prevention (CDC) recommend that everyone 6 months and older get vaccinated against the flu EVERY year, especially people who are at high risk.

Flu Basics

How Flu Spreads

The main way flu viruses spread is from person to person when an infected person coughs, sneezes or talks. When someone with the flu coughs or sneezes, droplets containing the virus are sprayed into the air. Someone else can become infected if they breathe the infected droplets, or touch infected droplets on surfaces and then touch their own eyes, nose or mouth.

Symptoms of Flu

Flu symptoms can often be confused with the common cold, but the flu usually comes on more suddenly and is more severe than the common cold. Symptoms of flu may include fever (usually high), headache, tiredness and weakness (can be extreme), dry cough, sore throat, runny or stuffy nose, body or muscle aches, nausea, vomiting and diarrhea (much more common among children than adults). People with colds are more likely to have a runny or stuffy nose and typically do not develop serious health problems.

A person who is sick with the flu is contagious, meaning they can spread the virus. Adults can be contagious from one day before having symptoms to seven days after getting sick. Children can be contagious for even longer than seven days.

Learn more about the difference between flu and a common cold and how to care for yourself at home when you are sick with the flu.

Preventing the Flu

Flu Vaccine FinderGetting an annual flu vaccine protects yourself, your family, and the vulnerable people in your community. Find a flu vaccine clinic near you.

Learn more ways to fight the flu.




Complications of Flu and When to Seek Care

In some people, flu can cause serious complications such as bacterial pneumonia, dehydration and heart failure. The people most at risk of complications for seasonal flu are:

  • Children younger than 2 years.
  • Adults 65 and older.
  • People with weakened immune systems and chronic illnesses such as asthma, congestive heart failure and diabetes.

If you have underlying medical conditions you are at greater risk of developing flu-related complications; you should consult your doctor if you have flu symptoms.

When to seek medical care for flu

What you should know about flu antiviral drugs

Other Types of Flu

Flu Information for Health Care Professionals and Laboratories



Flu Reporting

Physicians and laboratories are encouraged to report any laboratory-confirmed influenza (including rapid tests) to the Fairfax County Health Department. Please contact the Communicable Disease/Epidemiology unit with any questions at 703-246-2433.

Monitoring Flu Activity

The Virginia Department of Health (VDH) and Fairfax County Health Department monitor the level of activity of influenza-like illness (ILI) each week from October through May. Those are the months when flu is most likely to occur in Virginia, and that time period is referred to as the “flu season.”

We track:

  • Pneumonia and Influenza deaths in Fairfax County.
  • Number of students absent from Fairfax County schools.
  • Influenza-like illnesses reported from specific medical offices in Fairfax County.
  • Influenza-like illness and respiratory illness hospital emergency department and selected pediatric urgent care visits.
  • Selected laboratory data.

This information is used to:

  • Determine outbreaks.
  • Track patterns of illnesses.
  • To measure illness impact.

See VDH weekly surveillance reports.

For information about national flu surveillance, go to CDC's Flu Activity & Surveillance web page.

Educational Materials

Download these educational materials for your home, work, faith community and elsewhere.

Fairfax Virtual Assistant