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A 22-year-old female asked:

I took tetanus diphtheria pertussis vaccine dtap/tdap. i don't remember last when i took this vaccine. maybe when child/teen i'm 21 years old now. i have just read pertussis vaccine should not be taken before 10 years of last dose. is there any risk?

2 doctor answers3 doctors weighed in
Dr. Wendell Sumner
Pediatrics 53 years experience
In a word, no. Taking the pertussis vaccine early is generally safe. At 21 years of age most young people are due for a booster but it would cause no harm to receive the vaccine early.
Dr. Amrita Dosanjh
Pediatric Pulmonology 36 years experience
Keep vaccines current and review your records with your physician. A booster may be provided and at your age, it is reasonable to obtain a booster. Antibody testing is available to confirm the presence of protective antibodies.

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Last updated Apr 30, 2021

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