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Influenza (Flu)

 ​Influenza, also called flu, is a contagious respiratory illness caused by influenza viruses.

The best way to avoid getting flu is by getting a flu vaccine each year. On this page, you will find:

  • ​Information on why and where to get a flu vaccine
  • Ways to protect yourself, your family, and those around you from flu
  • Information about flu in Santa Clara County

Prevent Flu with the Flu Vaccine

The County of Santa Clara Public Health Department recommends every person aged 6 months and older get the flu vaccine every year.

Getting the flu vaccine:

  • Is the best way to avoid getting the flu
  • Reduces missed work and school due to the flu
  • Prevents flu-related hospitalizations
  • Protects those you care for, work with, and live with
Learn more about flu vaccines.

Where To Get a Flu Vaccine

County of Santa Clara vaccine clinics:

Additional vaccine resources:


More about Flu

Flu can cause mild to severe illness. Infection with flu can lead to hospitalization and death.

Common symptoms of flu include:

  • ​Fever
  • Cough
  • Sore throat
  • Runny or stuffy nose
  • Headache
  • Muscle or body aches
  • Fatigue (feeling tired)

Flu symptoms can be similar to those of the common cold, but are usually more severe. Learn more about the difference between colds and flu.

Anyone can get the flu, even healthy people. Serious problems from the flu can happen at any age. Some people are more likely to get very sick from the flu. This includes:

  • ​People over age 65
  • Young children
  • Pregnant women
  • People who have health conditions such as asthma, diabetes, or heart disease

How To Prevent the Flu

You can take the following steps to protect yourself and your loved ones from flu:

  • Get a flu vaccine
  • Cover your nose and mouth with a tissue or your elbow when you cough or sneeze
  • Avoid touching your eyes, nose, or mouth
  • Wash your hands often with soap and water or alcohol-based hand rub
  • Try to avoid close contact with sick people
  • If you are sick, stay home from work or school until 24 hours after the last fever
  • If you are sick, monitor your symptoms and contact your medical provider if your symptoms are getting worse
  • If you are seriously ill and at risk for complications from the flu, contact your medical provider because you may need additional treatment or hospital care

Flu Data for Santa Clara County

The County of Santa Clara Public Health Department monitors influenza activity throughout the year. The Public Health Department releases weekly flu reports during flu season.

Weekly flu reports​​

​​​​​​Flu News

September 24, 2019 - Press Release - First Two Santa Clara County Residents under the Age of 65 Years Have Died From the Flu​​

Last updated: 1/6/2020 9:24 AM