Pediatric Vaccine Schedule – CDC Immunization Schedule by Age

Vaccine	Abbreviation	Total doses	First dose age	Series complete by
Hepatitis B	HepB	3	Birth	6-18 months
Rotavirus	RV	2-3	2 months	6-8 months
Diphtheria, Tetanus, Pertussis	DTaP	5	2 months	4-6 years
Haemophilus influenzae type b	Hib	3-4	2 months	12-15 months
Pneumococcal conjugate	PCV15/PCV20	4	2 months	12-15 months
Inactivated poliovirus	IPV	4	2 months	4-6 years
COVID-19	COVID-19	1-3	6 months	Ongoing
Influenza	IIV/LAIV	Annual	6 months	Annual
Measles, Mumps, Rubella	MMR	2	12-15 months	4-6 years
Varicella	VAR	2	12-15 months	4-6 years
Hepatitis A	HepA	2	12-23 months	23-35 months
Tetanus, Diphtheria, Pertussis	Tdap	1 (booster)	11-12 years	11-12 years
Human Papillomavirus	HPV	2-3	11-12 years	15 years (if started before 15)
Meningococcal ACWY	MenACWY	2	11-12 years	16 years
Meningococcal B	MenB	2-3	16-18 years	18 years
RSV vaccine (maternal/infant)	RSV	1	Birth-8 months	As recommended

About the childhood immunization schedule

The CDC/ACIP recommended immunization schedule is updated annually. What you see here reflects the 2024 schedule. Always confirm with the most current CDC guidance at cdc.gov/vaccines/schedules, since individual state requirements and clinical situations can affect the schedule.

Why timing matters

Vaccines are timed to match when a child's immune system responds best. Delaying them doesn't make them safer. And some diseases (like whooping cough) hit hardest in the first few months of life, before the series is complete.

Catch-up schedule

If a child missed doses, they don't start over. Catch-up schedules exist for every vaccine. Your pediatrician can determine the minimum intervals needed to complete any series. The CDC also publishes a full catch-up schedule at cdc.gov/vaccines/schedules/hcp/imz/catchup.html.

Special circumstances

Premature infants, immunocompromised children, and those with certain chronic conditions may follow a modified schedule. Talk to your pediatrician. The schedule on this page covers healthy children without contraindications.

Related tools on MediCalc Pro

For weight-based dosing of antipyretics and antibiotics around vaccine visits, see Pediatric Dose Calculator. For growth monitoring between visits, see Growth Chart Percentile. For neonatal assessment at birth, see APGAR Score.

References

CDC/ACIP. Recommended Child and Adolescent Immunization Schedule for ages 18 years or younger, United States, 2024. CDC, 2024.
American Academy of Pediatrics. Red Book: 2024 Report of the Committee on Infectious Diseases. AAP, 2024.

Important: This page is a reference guide. It doesn't replace your child's healthcare provider. Vaccine recommendations can change, and individual children may need a modified schedule based on medical history. Always verify with a licensed provider.