Vaccinations, Pediatric Catch-Up 4 mo-6 yr 

Updated: Jul 31, 2015
  • Author: Abimbola Farinde, PharmD, PhD; Chief Editor: Mary L Windle, PharmD  more...
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Vaccinations, Pediatric Catch-Up 4 mo-6 yr

The guidelines below are derived from the United States Centers for Disease Control and Prevention. [1, 2, 3]

Hepatitis B

  • Minimum age: Birth
  • 3 doses
  • Dose 1 to dose 2: 4 wk
  • Dose 2 to dose 3: 8 wk (16 wk after dose 1)

Rotavirus

  • Minimum age: 6 wk
  • 3 doses
  • Dose 1 to dose 2: 4 wk
  • Dose 2 to dose 3: 4 wk

Diphtheria, tetanus, pertussis (DTaP)

  • Minimum age: 6 wk
  • 5 doses
  • Dose 1 to dose 2: 4 wk
  • Dose 2 to dose 3: 4 wk
  • Dose 3 to dose 4: 6 mo
  • Dose 4 to dose 5: 6 mo

Guidelines on Immunization from the American Academy of Pediatrics Committee on Infectious Diseases and the Advisory committee on Immunization Practices specify that if the fourth-dose DTaP vaccine was administered 4 months or more after the third dose, at an appropriate age, it can be counted as a valid dose and need not be repeated after the recommended 6-month interval between doses 3 and 4. [1, 2, 3]

Haemophilus influenza type b (Hib)

  • Minimum age: 6 wk
  • 4 doses
  • Dose 1 to dose 2: 4 wk (age < 12 mo), 8 wk (age 12-14 mo, final dose), none (age >15 mo)
  • Dose 2 to dose 3: 4 wk (age < 12 mo), 8 wk (age 12-15 mo, final dose), none (age >15 mo)
  • Dose 3 to dose 4: 8 wk (age 12-59 mo, final dose)

Pneumococcal

  • Minimum age: 6 wk
  • 4 doses
  • Dose 1 to dose 2: 4 wk (age < 12 mo), 8 wk (age 24-59 mo, final dose), none (age >24 mo)
  • Dose 2 to dose 3: 4 wk (age < 12 mo), 8 wk (age >12 mo, final dose), none (age >24 mo)
  • Dose 3 to dose 4: 8 wk (age 12-59 mo, final dose)

Guidelines on Immunization from the American Academy of Pediatrics Committee on Infectious Diseases and the Advisory committee on Immunization Practices state to administer 1 dose of PCV13 if any incomplete schedule of 3 doses of PCV (PCV7 and/or PCV13) were received previously. Administer 2 doses of PCV13 at 8 weeks apart if unvaccinated or any incomplete schedules of fewer than 3 doses of PCV (PCV7 and/or PCV13) were received previously. [1, 2, 3]

Inactivated poliovirus

  • Minimum age: 6 wk
  • 4 doses
  • Dose 1 to dose 2: 4 wk
  • Dose 2 to dose 3: 4 wk
  • Dose 3 to dose 4: 6 mo

Measles, mumps, rubella

  • Minimum age: 12 mo
  • 2 doses
  • Dose 1 to dose 2: 4 wk

Varicella

  • Minimum age: 12 mo
  • 2 doses
  • Dose 1 to dose 2: 3 mo

Hepatitis A

  • Minimum age: 12 mo
  • 2 doses
  • Dose 1 to dose 2: 6 mo