Flu Vaccinations

A flu vaccination, also known as a flu shot, is a vaccine that helps protect against influenza (flu). The flu is a respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death.

The flu vaccine is made from killed or weakened influenza viruses. When you get a flu shot, your body produces antibodies against the viruses. These antibodies help protect you from getting sick if you come into contact with the viruses later.

The flu vaccine is recommended for everyone 6 months of age and older, especially people who are at high risk for serious complications from the flu. These high-risk groups include:

Children younger than 5 years old
Adults 65 years and older
People with chronic health conditions, such as heart disease, lung disease, or diabetes
Pregnant women
People who live with or care for people at high risk
People who work in healthcare settings
The flu vaccine is usually given as a shot in the arm. There is also a nasal spray flu vaccine, but it is not recommended for everyone.

The flu vaccine is safe and effective. Serious side effects from the flu vaccine are very rare. The most common side effects are mild and go away on their own within a few days. These side effects may include:

Pain, redness, or swelling at the injection site
Fatigue
Muscle aches
Headache
Chills
Fever
The flu vaccine is the best way to protect yourself from the flu.