Why is the influenza vaccine important?

Influenza (the flu) is a serious illness. It causes fever, cough, headaches, muscle aches, a stuffy nose and a sore throat. Influenza can lead to pneumonia. It can also make other illnesses worse, especially those chronic illnesses affecting the heart and lungs.

Influenza is much less severe in people who are vaccinated. The vaccine reduces the number of deaths from influenza among the elderly and people with heart and lung disease.

Three strains of influenza viruses are covered with this vaccine. One or several of these strains may change annually.

What are the side effects of the influenza vaccine?

The most common side effects of the vaccine are pain and tenderness where the needle was given. Other possible reactions are fever, headaches, muscle aches and tiredness. It is important to keep a close watch on anyone after they receive the vaccine.

In some cases, between 2 and 24 hours after immunization, one might experience red eyes, coughing, wheezing, or other almost flu-like symptoms. These usually resolve themselves within 48 hours. This red eye/ respiratory syndrome is referred to as "Occular Respiratory Syndrome".

An extremely rare reaction, which is probably allergic, may also occur. It includes hives, wheezing and swelling of the throat and face. These reactions are probably related to severe egg allergies, as the vaccine has egg in it. If this should happen, seek immediate medical attention.

Can you get the flu from the flu vaccine?

No. You can't.

How long does it take to become effective?

It takes 10 days for the vaccine to become effective. However, you may have already been infected with the flu virus from the community.

If being given for the first time, children under nine years of age require two doses of vaccine, one month apart.