The flu vaccine is not a live vaccine so it cannot give you flu.
The vaccine will not cause an exacerbation or flare up of your symptoms.
It is given annually by injection to the upper outer area of the arm and it takes only seconds. The injection itself is not painful.
Possible side effects include pain, swelling and redness at the injection site, also occasionally slight fever, shivering, headache and aching muscles.
These symptoms usually disappear within one to two days without any treatment.