Skip to content

    Children's Vaccines Health Center

    Font Size

    DTaP and Tdap Vaccines


    When Should Children Be Vaccinated With the DTaP Vaccine?

    Children should receive five doses of the DTaP vaccine according to the following schedule:

    • One dose at 2 months of age
    • One dose at 4 months of age
    • One dose at 6 months of age
    • One dose at 15 to 18 months of age
    • One dose at 4 to 6 years of age

    Are there any children who should not get DTaP vaccine?

    The CDC recommends that children who are moderately or severely ill at the time they are scheduled to receive the vaccine should wait until they recover before getting it. Minor illnesses like a cold or low-grade fever, however, should not prevent a child from receiving a dose of the vaccine.

    If a child has a life-threatening allergic reaction after receiving a dose of the vaccine, that child should not be given another dose.

    A child who suffered a brain or nervous system disease within seven days of receiving the vaccine should not be given another dose.

    Some children may have a bad reaction to the pertussis vaccine in DTaP and should not take another dose. There is, however, a vaccine called DT that will protect them from diphtheria and tetanus. Talk with your doctor if your child experienced any of the following reactions:

    • Had a seizure or collapsed after a dose of DTaP
    • Cried nonstop for 3 hours or more after a dose of DTaP
    • Had a fever over 105 F after a dose of DTaP

    Are There Dangers Associated With DTaP and Tdap?

    Like any medicine, vaccines can have side effects. But the risk of experiencing a serious problem to DTaP or Tdap is extremely small. On the other hand, the risk of your child contracting a major illness like diphtheria or pertussis is extremely high without the vaccine.

    One of the most serious problems that can come from getting the vaccine is an allergic reaction. That happens in less than one out of a million doses. If it were going to happen it would most likely happen within a few minutes to a couple of hours after taking the vaccine. And even though it's rare, it's important to be alert for an allergic reaction with any medicine and get medical help at once if it occurs. Symptoms might include any of the following:

    Next Article:

    Today on WebMD

    Baby getting vaccinated
    Is there a link? Get the facts.
    syringes and graph illustration
    Get a customized vaccine schedule.
    baby getting a vaccine
    Know the benefits and the risk
    nurse holding syringe in front of girl
    Should your child have it?

    What To Know About The HPV Vaccine
    24 Kid Illnesses Parents Should Know
    Nausea and Vomiting Remedies Slideshow
    Managing Immunization Schedules For Kids

    Doctor administering vaccine to toddler
    gloved hand holding syringe
    infant receiving injection

    WebMD Special Sections