← Answers, before you even ask.
The chart: which vaccines at which age
CDC's Table 1 for civil surgeons - the vaccines Form I-693 requires in each age band. Age is counted on the day of the exam.
| Vaccine | Birth - 1 month0-1 mo | 2 - 11 months2-11 mo | 12 months - 6 years1-6 y | 7 - 10 years7-10 y | 11 - 17 years11-17 y | 18 - 64 years18-64 y | 65 years and older65+ |
|---|---|---|---|---|---|---|---|
| DTaP / DTP / DT | ✓ | ✓ | |||||
| Td / Tdap | 1 | ✓ | ✓ | ✓ | |||
| Polio (IPV) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
| MMR | ✓ | ✓ | ✓ | 2 | 2 | ||
| Rotavirus | 3 | ||||||
| Hib | ✓ | 4 | |||||
| Hepatitis A | ✓ | ✓ | ✓ | ||||
| Hepatitis B | ✓ | ✓ | ✓ | ✓ | ✓ | 5 | |
| Meningococcal (MenACWY) | ✓ | ||||||
| Varicella | ✓ | ✓ | ✓ | ✓ | ✓ | ||
| Pneumococcal | ✓ | 4 | ✓ | ||||
| Influenza | 6 | 7 | 7 | 7 | 7 | 7 |
✓ Required· In part of the band Not required
- 1 Only if the DTaP series was not finished
- 2 If born in 1957 or later
- 3 From 6 weeks; the series must finish by 8 months
- 4 Through 59 months (under 5)
- 5 Through 59 years
- 6 From 6 months, during flu season
- 7 During flu season
Source: CDC Technical Instructions for Civil Surgeons, Vaccination, Table 1 (updated March 11, 2025). COVID-19 has not been required since January 20, 2025.
Medical exam
How long to wait between doses
The minimum intervals from the CDC/ACIP catch-up schedule. The civil surgeon gives at most one dose of each vaccine at the exam; the next one can follow no sooner than this.
DTaP / DTP / DT
14 weeksminimum24 weeksminimum36 monthsminimum46 monthsminimum5
- The 5th is not needed if the 4th was given at 4 years or older
Td / Tdap
14 weeksminimum26 monthsminimum3
- 2nd to 3rd - 4 weeks, if the 1st dose was given before 12 months of age
- Then a Td or Tdap booster every 10 years. Someone 7 or older catching up gets Tdap as the first dose.
Polio (IPV)
14 weeksminimum24 weeksfor a child36 monthsminimum4
- 2nd to 3rd for an adult - after 6-12 months
- The last dose at 4 years or older
- Adults need a 3-dose series. Oral polio (OPV) from abroad counts only if given before April 1, 2016.
MMR
14 weeksminimum2
- Adults need one dose for the exam; children get the second at 4 to 6 years.
Rotavirus
14 weeksminimum24 weeksRotaTeq only3
- Not started at 15 weeks 0 days or older; the last dose by 8 months 0 days.
Hib
14 or 8 weeksdepends on age24 or 8 weeksdepends on age3
- 1st to 2nd: 4 weeks if the 1st was before 12 months; 8 weeks (and it is the last) if the 1st was at 12-14 months; no more doses if the 1st was at 15 months or older
- 2nd to 3rd: 4 weeks if the child is under 12 months now; 8 weeks (the last) at 12 months or older
- Not given at 5 years or older.
Hepatitis A
16 monthsminimum2
Hepatitis B
14 weeksminimum28 weeksand 16 weeks after the 1st3
- For an infant the 3rd dose not before 24 weeks of age
- Adults on the 2-dose Heplisav-B: the two doses 4 weeks apart.
Meningococcal (MenACWY)
18 weeksminimum2
- The booster at 16 if the 1st was given before 16
- One dose is enough when the first is given at 16 or older.
Varicella
13 monthsfor a child under 132
- From 13 years - after 4 weeks
- A verified history of chickenpox counts instead of the vaccine.
Pneumococcal
14 or 8 weeksdepends on age24 or 8 weeksdepends on age38 weeksat 12-59 months4
- 1st to 2nd: 4 weeks if the 1st was before 12 months; 8 weeks (the last) if at 12 months or older
- 2nd to 3rd: 4 weeks under 12 months; 8 weeks at 12 months or older
- A healthy child of 24-59 months with no doses needs one. At 65 and older - one dose of a conjugate vaccine.
Influenza
14 weeks6 months - 8 years2
- Two doses only for a child of 6 months - 8 years in their first season
- Otherwise one dose each season.
Source: CDC/ACIP child and adolescent immunization schedule, catch-up Table 2, and the adult schedule notes (updated July 2, 2025).