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Can adults have severe allergic reactions to Tdap or Td vaccines?

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Although it's rare, someone may have a severe allergic reaction to an ingredient in the Tdap or Td vaccine. This generally happens in fewer than one in a million doses. Most of the time, such reactions occur within a few minutes of receiving the vaccine.

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 November 12, 2019

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 November 12, 2019

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