PREVIOUS QUESTION:

 

NEXT QUESTION:

 

What has been found in clinical trials of the Tdap vaccine?

ANSWER

During clinical trials of the Tdap vaccine, two adults developed temporary nervous system problems. It's unknown whether this was due to the vaccine or not. In rare cases, vaccination with Tdap or Td has led to extreme swelling of the arm where the shot was given.

SOURCES:  

CDC web site: "Possible Side Effects of Vaccines" and "Tetanus, Diphtheria (TD), or Tetanus, Diphtheria, and Pertussis (Tdap) Vaccine. What You Need To Know."

National Institute of Allergy and Infectious Diseases: "Types of Vaccines."

Immunization Action Coalition: "Ask the Experts: Diphtheria, Tetanus, Pertussis" and "Pertussis Vaccine."

World Health Organization web site: "Diphtheria."

CDC's Advisory Committee on Immunization Practices.

Reviewed by Minesh Khatri on April 30, 2017

SOURCES:  

CDC web site: "Possible Side Effects of Vaccines" and "Tetanus, Diphtheria (TD), or Tetanus, Diphtheria, and Pertussis (Tdap) Vaccine. What You Need To Know."

National Institute of Allergy and Infectious Diseases: "Types of Vaccines."

Immunization Action Coalition: "Ask the Experts: Diphtheria, Tetanus, Pertussis" and "Pertussis Vaccine."

World Health Organization web site: "Diphtheria."

CDC's Advisory Committee on Immunization Practices.

Reviewed by Minesh Khatri on April 30, 2017

NEXT QUESTION:

Can adults have allergic reactions to Tdap or Td vaccines?

WAS THIS ANSWER HELPFUL

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.

    This tool does not provide medical advice. See additional information.

    Other Answers On: