What is the flu (influenza)?

Influenza (flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The flu is different from a cold. The flu usually comes on suddenly. People who have the flu often experience fever, chills, cough, sore throat, runny or stuffy nose, muscle or body aches, headaches, and fatigue (tiredness). Some people may have vomiting and diarrhea, though this is more common in children than adults.
Some people, such as senior citizens, 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 with a flu shot.

What is the flu shot?

The “flu shot” is an inactivated vaccine (containing killed virus) that’s given with a needle, usually in the arm.
This season’s vaccine protects against the three influenza viruses that research indicates will be most common during the season. This includes an influenza A (H1N1) virus, an influenza A (H3N2) virus, and an influenza B (Hib) virus.
The vaccine takes effect approximately two weeks after it has been administered as antibodies (substances in the blood that protect against infection) accumulate and provide protection against influenza. Therefore, you may be susceptible to influenza during the two weeks after your flu shot.

What is the Fluzone High-Dose flu shot?

Seniors ages 65 and older have a higher risk for developing complications from the flu and account for more than 60% of the flu-related hospitalizations each year. Recent studies show that people ages 65+ may not respond as well to standard-dose flu shots because they do not produce as high of an antibody response following vaccination as do younger people. People with low antibody levels may be at higher risk of catching the flu.
Fluzone High-Dose vaccine is designed specifically for patients ages 65+ and works by improving the production of antibodies in order to provide a stronger immune response to the flu than traditional vaccines. Like the standard flu shot, Fluzone High-Dose is given as an injection in the arm and the side effects are similar, though some patients may experience increased redness around the injection site.

Who should get a flu shot?

The CDC recommends everyone ages 6 months and older* get a flu shot this season, including healthy people, and people with chronic conditions. In general, it is recommended that anyone who wants to reduce his or her chances of getting the flu should be vaccinated.
It’s especially important for some people to get vaccinated, including:
People who are at high risk of developing serious complications like pneumonia if they get sick with the flu.
This includes:
People who have certain medical conditions including asthma, diabetes, and chronic lung disease
Pregnant women
People 65 years and older
People who live with or care for others who are at high risk for developing serious complications. This includes household contacts and caregivers of people with certain medical conditions including asthma, diabetes, and chronic lung disease.

Who should not get a flu shot?

Certain individuals should not be vaccinated without first consulting a healthcare professional. These patients include:
Those with a severe allergy to chicken eggs
Those with allergies to certain medications and preservatives, including certain antibiotics and Thimerosal (preservative)
Those who have had a severe reaction to an influenza vaccination in the past
Those who have had Guillain-Barré Syndrome (GBS) within six weeks of getting the flu vaccine previously
Those who have a moderate or severe illness with a fever should wait until they recover before getting a flu shot

What are the common side effects of the flu shot?

The viruses in the flu shot are killed (inactivated), so you cannot get the flu from a flu shot. Some minor side effects that could occur are:
Soreness, redness, or swelling where the shot was given
Fever (low grade)
If these problems occur, they begin soon after the shot and usually last 1 to 2 days. Almost all people who receive influenza vaccine have no serious problems from it.

Call the Centers for Disease Control and Prevention (CDC) at 800-232-4636 or visit the CDC website, at cdc.gov/vaccines, for more vaccine information.

If you believe you have a medical emergency. Please call 911


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