Catch-up Immunization Schedule for Children and Adolescents Who Start Late or Who Are More than 1 Month Behind

Recommendations for Ages 18 Years or Younger, United States, 2025

To make vaccination recommendations, healthcare providers should:

  1. Determine needed vaccines based on age
  2. Determine appropriate intervals for catch-up, if needed
  3. Assess for medical conditions and other indications
  4. Review special situations
  5. Review contraindications and precautions to vaccination

Please go to CDC’s Public Health Media Library page to get latest Catch-up Immunization Schedule updates.

Additional information

  • Consult relevant ACIP statements for detailed recommendations.
  • For calculating intervals between doses, 4 weeks = 28 days. Intervals of ≥4 months are determined by calendar months.
  • Within a number range (e.g., 12–18), a dash (–) should be read as “through.”
  • Vaccine doses administered ≤4 days before the minimum age or interval are considered valid. Doses of any vaccine administered ≥5 days earlier than the minimum age or minimum interval should not be counted as valid and should be repeated as age-appropriate. The repeat dose should be spaced after the invalid dose by the recommended minimum interval. Recommended and minimum ages and intervals between vaccine doses, in General Best Practice Guidelines for Immunization.
  • Information on travel vaccination requirements and recommendations is available at https://www.cdc.gov/travel/.
  • For vaccination of persons with immunodeficiencies, see Table, Vaccination of persons with primary and secondary immunodeficiencies, in General Best Practice Guidelines for Immunization, Immunization in Special Clinical Circumstances (In: Kimberlin DW, Barnett ED, Lynfield Ruth, Sawyer MH, eds. Red Book: 2021–2024 Report of the Committee on Infectious Diseases. 32nd ed. Itasca, IL: American Academy of Pediatrics; 2021:72–86).
  • For information about vaccination in the setting of a vaccine-preventable disease outbreak, contact your state or local health department.
  • The National Vaccine Injury Compensation Program (VICP) is a no-fault alternative to the traditional legal system for resolving vaccine injury claims. All vaccines included in the child and adolescent vaccine schedule are covered by VICP except for dengue, PPSV23 and COVID-19 vaccines. COVID-19 vaccines that are authorized or approved by the FDA are covered by the Countermeasures Injury Compensation Program (CICP). For more information, see www.hrsa.gov/vaccinecompensation or www.hrsa.gov/cicp.
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