Adult Immunization Schedule Notes

Recommendations for Ages 19 Years or Older, United States, 2024

How to use the schedule

To make vaccination recommendations, healthcare providers should:

  1. Determine recommended vaccinations by age (Table 1 - By Age)
  2. Assess need for additional recommended vaccinations by medical condition or other indication (Table 2 - By Medical Condition)
  3. Review vaccine types, dosing frequencies and intervals, and considerations for special situations (Notes)
  4. Review contraindications and precautions for vaccine types (Appendix)
  5. Review new or updated ACIP guidance (Addendum)

Administer recommended vaccines if vaccination history is incomplete or unknown. Do not restart or add doses to vaccine series if there are extended intervals between doses. The use of trade names is for identification purposes only and does not imply endorsement by the ACIP or CDC.


For vaccine recommendations for persons 18 years of age or younger, see the Recommended Child and Adolescent Immunization Schedule.

Additional information

  • 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. The repeat dose should be spaced after the invalid dose by the recommended minimum interval. For further details, see Table 3-2, 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
  • For vaccination of persons with immunodeficiencies, see Table 8-1, Vaccination of persons with primary and secondary immunodeficiencies, in General Best Practice Guidelines for Immunization.
  • 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 adult immunization schedule except PPSV23, RSV, RZV, Mpox, and COVID-19 vaccines are covered by the National Vaccine Injury Compensation Program (VICP). Mpox and COVID-19 vaccines are covered by the Countermeasures Injury Compensation Program (CICP). For more information, see or

COVID-19 vaccination

Haemophilus influenzae type b vaccination

Hepatitis A vaccination

Hepatitis B vaccination

Human papillomavirus vaccination

Influenza vaccination

Measles, mumps, and rubella vaccination

Meningococcal vaccination

Mpox vaccination

Pneumococcal vaccination

Poliovirus vaccination

Respiratory syncytial virus vaccination

Tetanus, diphtheria, and pertussis (Tdap) vaccination

Varicella vaccination

Zoster vaccination