- Flu Slideshow: 10 Foods to Eat When You Have the Flu
- Natural Cold & Flu Remedies Slideshow
- Take the Cold & Flu Quiz
- Patient Comments: Flu Vaccination - Side Effects
- Patient Comments: Flu Vaccine (Flu Shot) - Experience
- Influenza vaccine (flu shot) facts
- What is influenza (flu)?
- Why vaccinate for the flu?
- What are the different types of flu vaccines?
- What flu viruses does the flu vaccine protect against?
- How does the flu vaccine work to prevent the flu?
- When should one receive the flu vaccine?
- Who should receive the flu vaccine?
- Who should not receive the flu vaccine?
- What are risks and side effects of the flu vaccine?
- Can the flu vaccine give me the flu?
- What should I do about adverse reactions to the flu vaccine?
- How effective is the flu shot?
- What was the novel H1N1 (swine flu) vaccine?
- What is the best way to locate a flu shot clinic?
Quick Guide10 Foods to Eat When You Have the Flu
What are risks and side effects of the flu vaccine?
Serious side effects of the flu vaccine are uncommon. Side effects of the injection vaccine include soreness at the site of the injection, muscle aching, fever, and feeling unwell. People report less discomfort with the intradermal rather than the intramuscular vaccine. Very rarely, serious allergic reactions have been reported.
Guillain-Barré syndrome (GBS) is an illness characterized by fever, nerve damage, and muscle weakness. In 1976, vaccination with the swine flu vaccine was associated with development of GBS. Studies have been done to evaluate if other flu vaccines were associated with GBS, with only one of the studies showing an association. That single study suggested that one person out of 1 million vaccinated people may be at risk of GBS associated with the vaccine.
The live viruses in the nasal-spray vaccine are weakened so that they do not cause severe symptoms. However, people at high risk for serious complications of the flu (see above) and those with suppressed immune systems (including those taking biologic medications, such as for rheumatoid arthritis) should receive the inactivated rather than the nasal-spray vaccine. Mild symptoms can occur as a side effect of the vaccination. Side effects of the nasal-spray flu vaccine can include runny nose, headache, sore throat, and cough. Children who receive the vaccine may also develop mild fever and muscle aches.