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The flu (influenza) is caused by a virus that is easily spread. A flu vaccine protects you and others from the flu. It’s best to get a flu shot each fall, as soon as the vaccine is available in your area. You can get it at your health care provider’s office or a health clinic. Drugstores, senior centers, and workplaces often offer flu shots, too. If you want to know if your provider has the flu vaccine available, or if you have other questions, ask your healthcare provider.
The flu shot will not give you the flu.
The flu can be dangerous—even life-threatening. Every year, about 36,000 people die of complications from the flu.
The flu is caused by a virus. It can’t be treated with antibiotics.
Influenza is not the same as “stomach flu,” the 24-hour bug that causes vomiting and diarrhea. This is most likely due to a GI (gastrointestinal) infection—not the flu.
You need to get a flu shot each year.
Flu symptoms tend to come on quickly. Fever, headache, fatigue, cough, sore throat, runny nose, and muscle aches are symptoms of the flu. Upset stomach and vomiting are not common for adults. Some symptoms, such as fatigue and cough, may last a few weeks.
There are many strains (types) of the flu virus. Medical experts predict which strains are most likely to make people sick each year. Flu shots are made from these strains. When you get a flu vaccine, inactivated (“killed”) or very mild flu viruses are injected into your body or sprayed into your nose. These cannot give you the flu. But they do prompt your body to make antibodies to fight these flu strains. If you’re exposed to the same strains later in the flu season, the antibodies will fight off the germs.
The CDC recommends that infants over the age of 6 months and all children and adults should get flu shots every year.
Some people are at an increased risk of developing serious complications from the flu. It is extremely important that these people get the vaccine. They include those with:
Long-term heart and lung conditions
Other serious medical conditions
Endocrine disorders, like diabetes
Kidney or liver disorders
Weakened immune systems from disease of medical treatment; for example, those with HIV or AIDS or taking long-term steroids or medications to treat cancer
Blood disorders, such as sickle cell disease
It is also very important that others that have an increased risk of being exposed to the flu or are around people with increased risk of complications get the vaccine. They are:
Health care providers and other staff that provide care in hospitals, nursing homes, home health, and other facilities
Household members, including children, of people in high-risk groups
The flu vaccine is available as a shot and as a nasal spray. Your health care provider will determine which vaccine is right for you.
The shot is available in a few different forms. There is a high-dose vaccine for those over 65 and a vaccine for those with egg allergies. It is safe for most people. Talk with your provider if you have had:
A severe allergic reaction to a previous flu vaccine
Guillain-Barre syndrome (a severe paralyzing condition)
The nasal spray is recommended for people from 2 to 49 years old. It should not be given to adults who:
Have weakened immune systems
Have egg allergies
Will be in close contact with someone with a weakened immune system
Have taken antiviral medication in the past 2 days
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