Flu vaccine
flu shot · flu jab · influenza vaccine · flu vaccination
A vaccine injection in your upper arm. It helps your body get ready for the flu in advance. You cannot catch the flu from this vaccine.
Every year before flu season, usually in the fall. Especially important for children, older people, pregnant women, and people with long-term illnesses.
⏱ Duration: the shot takes a few seconds, usually 15 to 40 minutes with the checkup
Be sure to tell your doctor
How to prepare
- Health. The vaccine is given when you are well. You will have a quick check before the shot.
- Timing. It is best to get vaccinated early, before the flu season starts. Protection builds up in about 2 weeks.
- Clothes. Wear something comfortable so your upper arm is easy to uncover.
What to bring
- Your ID
- Your vaccination record, if you have one
How it goes
- The doctor or nurse asks how you feel and takes your temperature
- You uncover your upper arm
- The skin is wiped and the shot is given
- The vaccine is written in your records
- After the shot, you stay at the clinic for about 30 minutes
What you'll feel
- A quick prick
- Sometimes the spot is sore or red for 1 to 2 days
- Sometimes tiredness or a mild fever. It goes away on its own
Afterwards
- Stay near the room for 30 minutes
- You can go back to your usual day
- Do not rub the injection spot
- Protection builds up in about 2 weeks and lasts about a year
Contact a doctor straight away if
- Trouble breathing, a swollen face or throat, or a rash all over the body: call emergency services
- A high fever that lasts more than two days
Common questions
Can the flu shot give me the flu?
No. The vaccine has no live virus that can cause the flu. Feeling a bit tired is your immune system responding.
Why do I need a flu shot every year?
The flu virus changes, and the vaccine is updated every season. Protection from last year's shot also fades.
Can I get the flu shot while pregnant?
Usually yes, it is recommended. Tell your doctor you are pregnant. They will choose the vaccine and timing.