Guides for parents
Understand a slower vaccine schedule
These guides are for parents who want to vaccinate but prefer a more spaced-out pace: fewer shots per visit, more time between them, and only the doses the CDC's own catch-up rules say a healthy child still needs. Each one is drawn from official sources and is direct about the trade-offs.
Key takeaways
- A delayed schedule gives the same vaccines at a slower pace; it is not the same as skipping vaccines, and the main trade-off is a longer time unprotected.
- For healthy children, a later start can reduce doses of Hib, PCV, DTaP and polio, but not hepatitis B, MMR or varicella; rotavirus cannot be delayed.
- The CDC and AAP published different 2026 schedules; a federal court stay keeps the earlier, broader schedule in effect while an appeal is pending.
- School vaccine requirements are set by each state.
Guides
Delayed schedules, explained →
What a spaced-out schedule is, why some parents choose it, the trade-offs, and how minimum-interval and catch-up rules let it still work.
Which vaccines can be delayed →
A vaccine-by-vaccine table: where delaying lets you skip doses, what stays the same, and the one vaccine (rotavirus) that can't be delayed.
CDC vs. AAP in 2026 →
Why the CDC and the American Academy of Pediatrics publish different childhood schedules, and what the March 2026 court stay means.
Doses by start age →
A table of how many doses each vaccine needs if a healthy child starts at birth, 6 or 12 months, 2, 4 or 5 years.
Printable schedule →
What makes a printable delayed schedule valid, with three example plans checked against CDC minimum ages and intervals.
Catch-up schedule →
How the CDC catch-up rules work for a child who starts late or falls behind, which doses age out, and what to bring to the visit.
One vaccine at a time →
An even-handed look at one shot per visit: how many visits it takes, the longer unprotected time and the rotavirus limits.
Vaccine safety monitoring & evidence →
How VAERS, the Vaccine Safety Datalink and v-safe work, and what CDC, FDA and the National Academies say about aluminum, thimerosal and spacing.
Who should not use this tool →
Immunocompromise, premature babies, allergies, travel and hepatitis B-positive or unknown mothers: when to get clinician guidance first.
Talking to your pediatrician →
A printable conversation guide: what to bring, questions to ask and how to keep the visit collaborative.
Vaccine glossary →
Plain-language definitions: minimum interval, grace period, shared decision-making, aluminum adjuvant, exemptions and more.
Parent FAQ →
Sourced answers to what parents ask: Is delaying safe? Can I skip the Hep B birth dose? How many shots at once? What does kindergarten require?
Alternative vaccine schedules →
What delayed or alternative schedules are, how they differ from CDC and AAP, what studies show and the trade-offs.
Spacing vaccines: what the research shows →
Studies and CDC/AAP statements on spacing or delaying vaccines, immune capacity and where timing risks are highest.
How many shots per visit? →
CDC guidance on several vaccines at one visit, typical visit counts from the planner and the live-vaccine 28-day rule.
Missed a dose: do you restart? →
The CDC says a late dose does not restart the series; how minimum ages and intervals work and when a dose is repeated.
Kindergarten vaccine requirements →
How school vaccine rules work by state, exemptions, provisional enrollment and how to check your school.
Find your child's vaccine records →
Where to find vaccination records: the pediatric office, state immunization registry, schools and what to do if lost.
Vaccines for adopted or immigrant children →
What the CDC says about foreign or missing vaccine records and when doses are repeated.
Catch-up by age →
Doses, visits and finish age for a child starting catch-up at 12 months through 18 years, computed from the planner.
Baby shots by age →
Which vaccines are due at the 2-, 4-, 6-, 12-, 15-18-month and 4-6-year visits on the on-time schedule, and which can wait.
Delay guide for each vaccine
One page per vaccine: what a later start changes, the risks of waiting, minimum ages and intervals, and catch-up.
Sources
Primary sources only. Links open the publisher's own page.
- CDC Child and Adolescent Immunization Schedule by Age (opens in a new tab)
- CDC Catch-up Immunization Schedule (Table 2) (opens in a new tab)
- CDC Child and Adolescent Schedule Notes (opens in a new tab)
- AAP Recommended Childhood and Adolescent Immunization Schedule, 2026 (opens in a new tab)
- AAP HealthyChildren.org: Immunizations (opens in a new tab)
Build and reference
- Build a plan Enter a birth date and your pace for a printable schedule.
- Vaccine and ingredient guide Brands, aluminum content and ingredient lists, linked to CDC and FDA.
- School rules by state Kindergarten requirements with official state links.
- Editorial policy How we source and review these guides.