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What side effects can I expect after a vaccination?

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You may have side effects up to 3 weeks after vaccination. If they're severe, talk to your doctor. Common side effects include:

  • Hepatitis A: Soreness and redness at injection site, headache, fatigue, severe allergic reaction in very rare cases
  • Hepatitis B: Soreness at injection site, fever
  • Influenza: Redness and swelling at injection site that can last up to 2 days, fever
  • Tetanus/Diphtheria: Low-grade fever, soreness and swelling at injection site
  • Measles, Mumps, Rubella (MMR): Non-contagious rash, swelling of neck glands and cheeks, pain and stiffness of joints 1-2 weeks after vaccination
  • Varicella: Fever, soreness or redness at injection site, rash or small bumps up to 3 weeks after vaccination
  • Pneumococcal: Fever, soreness at injection site
  • Oral Polio Vaccine (OPV): None
  • Inactivated Polio Vaccine (IPV): Redness, discomfort at injection site

SOURCE: Centers for Disease Control.

Reviewed by Traci C. Johnson on September 07, 2017

SOURCE: Centers for Disease Control.

Reviewed by Traci C. Johnson on September 07, 2017

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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