What are the side effects of H1N1 influenza virus vaccine injectable?

What are the possible side effects of H1N1 influenza virus injectable vaccine ()? The injectable form of H1N1 influenza virus vaccine is a "killed virus" vaccine and will not cause you to become ill with the flu virus that it contains. However, you may have flu-like symptoms at any time during flu season that may be caused by other strains of influenza virus.You should not receive a booster vaccine if you had a life-threatening allergic reaction after the first shot.Keep track of any and all side effects you have after receiving this vaccine. If you ever have to receive another H1N1 influenza virus vaccine in the future, you will need to tell the doctor if the first shot caused any side effects.Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.Call your doctor at once if you have any of these serious side effects:
  • weakness, numbness or tingly feeling in your feet and spreading upward;
  • problems with vision, speech, swallowing, or bladder and bowel functions;
  • severe lower back pain;
  • slow heart rate, trouble breathing, feeling like you might pass out;
  • high fever; or
  • unusual bruising or bleeding.
Less serious side effects can last a day or two after you receive this vaccine and may include:
  • runny or stuffy nose;
  • low fever;
  • sore throat;
  • loss of appetite;
  • headache, tired feeling; or
  • muscle pain.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report vaccine side effects to the US Department of Health and Human Services at 1-800-822-7967.

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