U.S. doctors online nowAsk doctors free
A 40-year-old member asked:

How long is the tdap vaccine effective for?

2 doctor answers5 doctors weighed in
Dr. James Ferguson
Pediatrics 47 years experience
Depends: When given to a 2 month old with an immature immune system its benefits begin to wain within 3-6 months(which is why they get boosters). If given to a five year old who completed the primary series, you get 5-10 yrs which is about all you can get with the adult preparation in the adult population..
Dr. James Ferguson
Pediatrics 47 years experience
Provided original answer
Those in occupations like landscape work or who garden as a hobby may want to consider using the 5 yr mark as the limit.Frequent & direct contact with tetanus spores & occasional wounds involved make tetanus a bit more likely.The other agents,not so much.
Oct 7, 2012
Dr. Yash Khanna
Dr. Yash Khanna commented
Family Medicine 58 years experience
Tdap is not the same as dtap vaccine.It is a vaccine which is given at 11years of age and ower for adults to boost their immunity to all three ingredients of it which is Tetanus,Diptheria and Whooping cough and is not given to babies and younger children.If you have had primary immunisation in childhood with 5 doses of Dtap than a booster at age 11years and than a booster every 10 years is all that is needed.But those who have not had childhood dtap 5 doses they need to get more frequent boosters
Jan 25, 2013
Dr. Yash Khanna
Family Medicine 58 years experience
EFFECTIVE 10 YEARS: It is recommended a booster be given every ten years, as first tdap is given at age of 11, to children who have completed primary vaccination ate age four with five doses of dtap, that is three doses in first year, one in second year after age 15 months, fifth at or after age 4 years. Only exception is if there is a dirty cut after 5 years than a booster of tetanus toxoid or combined tdap may be given.

Related questions

A 21-year-old member asked:
How successful is the tdap vaccine for preventing diphtheria?
4 doctor answers5 doctors weighed in
A 37-year-old member asked:
Is there a Tdap/whooping cough vaccine for teenagers?
2 doctor answers4 doctors weighed in
A 42-year-old member asked:
Are tdap all one vaccine or is it three?
1 doctor answer3 doctors weighed in
A 47-year-old member asked:
What happens if i get the tdap vaccine, how long will it be before i'm fully immunized?
2 doctor answers4 doctors weighed in
Last updated Apr 21, 2019
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.