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Flu Resources

It’s your best defense against the flu.

Getting a yearly vaccine is one the best ways to avoid getting the flu. Flu shots are available seasonally at flu shot clinics, Sutter Walk-In Care and your doctor's office.

Learn More About the Flu

  • Flu Symptoms and Care
  • The Truth About Flu Shots
  • Pregnancy and the Flu
  • Is It COVID-19 or the Flu?
  • Flu Care for Children
  • Video: About the Flu Vaccine

Is It the Seasonal Flu?

Compare your symptoms or use our Symptom Checker for more help.
SymptomsCOVID-19*ColdFluAllergies
Fever Common (measured at 100°F or higher) Rare High (100° – 102°F), can last 3 – 4 days Rare
Headache Sometimes Rare Intense Sometimes
General aches, pains Sometimes Slight Common (often severe) Rare
Fatigue, weakness Common Slight Common (often severe) Sometimes
Extreme exhaustion Sometimes (progresses slowly) Rare Common (starts early) Rare
Stuffy nose Rare*** Common Sometimes Common
Sneezing Rare*** Common Sometimes Common
Sore throat Rare*** Common Common Sometimes
Cough Common Mild to moderate Common (can become severe) Sometimes
Shortness of breath In more serious infections Rare Rare Common
Runny nose Rare Common Sometimes Common
Diarrhea Sometimes Rare Sometimes** Rare

If viewing this chart on your phone, scroll to the left to see all symptoms.

*COVID-19 information is still evolving.
**This symptom is specific to children.
***More common in omicron variant infections.

Sources: CDC, WHO, National Institute of Allergy and Infectious Diseases and American College of Allergy, Asthma and Immunology.

Frequently Asked Questions

Getting Your Flu Shot

  • Flu season starts in fall and lasts until March or April. It takes about two weeks after vaccination to be fully protected, so you should get a flu shot before the flu begins spreading — ideally by the end of October. It takes about two weeks after vaccination to be fully protected. You can still get vaccinated later, even into winter.

  • Your safety is our priority. The process for getting a flu shot hasn't changed and we have safety protocols in place at all locations.

  • Sutter Walk-In Care offers the flu shot for $23, if you're paying out of pocket. It's always a good idea to check with your health plan to determine the specific details of your coverage.

  • Flu shots are available at Sutter Walk-In Care, Clinics and at your doctor's office.

    Appointments are required. Patients can book visits online or over the phone by calling (844) 987-6115.

  • Every year the influenza virus changes, making it different from the previous year. Getting a flu shot every year may not completely prevent the disease, but it can lessen its effects and minimize your chances of getting seriously ill and being hospitalized. Your immunity from a flu shot also diminishes over time, so a flu shot every year will help keep you protected.

  • You can’t get the flu from the flu shot. The viruses inside the vaccine are dead and can’t infect you.

  • The most common flu shot side effects are redness, swelling and soreness at the injection site. This occurs in only 15 to 20 percent of people who get the shot and are usually mild. Fever, chills and muscle pain occur in less than one percent (1 in 100) of people receiving a flu shot. Visit the Centers for Disease Control and Prevention website for more answers about flu vaccine safety.

  • Yes, if you’re age 17 and under, you need parental or guardian consent to receive a flu vaccine. Bring a parent or guardian to your vaccine appointment, or download the consent form, have it signed and bring it with you.

    Flu Vaccine Consent Form

    • English (PDF)
  • Yes, Sutter can provide the high dose flu vaccine for this age group, which is associated with a stronger immune response. High-dose flu vaccination is especially important for people 65 years and older because they are at higher risk of changes in immune defenses or developing serious flu complications.

The Flu During COVID-19

  • While it’s not possible to say with certainty what will happen in the fall and winter, CDC believes it’s likely that flu viruses and the virus that causes COVID-19 will both be spreading. In this context, getting a flu vaccine will be more important than ever. CDC recommends that everyone 6 months and older get a yearly flu vaccine.

  • Yes. It's possible to have the flu (as well as other respiratory illnesses) and COVID-19 at the same time.

  • Getting a flu vaccine won’t protect against COVID-19. However, the flu vaccination has many other important benefits. Flu vaccines have been shown to reduce the risk of flu illness, hospitalization and death. Getting a flu vaccine this fall will be more important than ever, not only to reduce your risk from flu but also to help conserve potentially scarce healthcare resources.

  • Influenza (Flu) and COVID-19 are both contagious respiratory illnesses, but they’re caused by different viruses. COVID-19 is caused by a coronavirus called SARS-CoV-2. The flu is caused by infection with influenza viruses. Because some of the symptoms of flu and COVID-19 are similar, it may be hard to tell the difference between them based on symptoms alone, and testing may be needed to help confirm a diagnosis.

  • FluMist is only indicated for use in specific populations. Consult your doctor to find out if you’re eligible to receive the flu mist.

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