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

What are the possible side effects of H1N1 influenza virus nasal vaccine ()? The nasal form of H1N1 influenza virus vaccine is a "live virus" vaccine and may cause you to have mild flu-like symptoms. However, you may have flu-like symptoms at any time during flu season that may be caused by strains of influenza virus that are not contained in the vaccine.You should not receive a booster vaccine if you had a life-threatening allergic reaction after the first dose.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 vaccine 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:
  • wheezing, trouble breathing;
  • weakness, numbness or tingly feeling in your feet and spreading upward; or
  • high fever, chills, body aches, flu symptoms.
Less serious side effects can last a day or two after you receive this vaccine and may include:
  • runny or stuffy nose, sneezing;
  • low fever;
  • stomach pain, loss of appetite;
  • feeling tired or irritable;
  • headache; 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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