Flu Season Information and Resources

2023 National Influenza Vaccination Week

National Influenza Vaccination Week (NIVW) is an awareness campaign promoted by the Centers for Disease Control and Prevention (CDC).

The annual observance in December reminds everyone six months and older that there is still time to protect yourself against severe illness this flu season.

This year, the CDC is using the phrase "wild to mild" to promote the benefits of the flu vaccine, specifically how the vaccine can significantly reduce the chances of severe illness in people who get sick with the flu. 

a promotional graphic from the centers for disease control and prevention comparing an elk to a dog

Influenza Resources

Find a Flu Vaccine

You can find Flu vaccine and COVID-19 vaccine locations nearest you by using an interactive online map from the CDC. Vaccination clinics scheduled in the Town of Lexington will be posted online on the Health Department's main page.

Influenza Information

Flu Facts

  • Influenza or Flu is a 
    contagious respiratory illness 
  • It is caused by the influenza viruses
  • It can cause mild to severe illness
  • It may be prevented by getting the flu vaccination each year
  • About 36,000 people die from the flu each year

Every year in the United States,  on average, 50 to 20% of the population is infected with the flu.  More than 200,000 people are hospitalized from flu complications. 


  • fever
  • headache
  • extreme fatigue
  • dry cough
  • sore throat
  • runny or stuffy nose
  • muscle aches
  • nausea
  • diarrhea

Other complications of the flu may lead to pneumonia, dehydration, or worsening of existing medical conditions such as asthma, diabetes, or congestive heart failure.

Flu spreads by respiratory droplets caused by coughing and sneezing.  Touching your mouth and nose after touching something with flu viruses on it.  Most healthy adults may be able to infect others beginning 1 day before symptoms develop and for up to 5 days after becoming sick.

In addition to getting vaccinated, you may help prevent the spread of flu by practicing good personal hygiene and covering your cough.  Cover your nose and mouth with a tissue when coughing and sneezing.  If you do not have tissues available, sneeze into your sleeve and not into your hands.  Stay at least 3 feet away from other people if you are coughing or sneezing.  Wash your hands with soap and water often or use hand sanitizer.

The Centers for Disease Control and the Massachusetts Department of Public Health recommend that everyone 6 months of age and older should receive an annual flu vaccination.  It is especially important for people who are 65 years and older, children, and those who have chronic medical conditions or a weak immune system.  

For further information or if you have any questions, contact the Office of Public Health, at 781-698-4503. To speak with a Public Health Nurse, please call (781) 698-4509 on Mondays, Wednesdays or Fridays. If you would like more information on the Flu and Flu Vaccine, please visit www.flu.gov