FIGURE 2. Catch-up immunization schedule for persons aged 4 months through 18 years who start late or who are more than 1 month behind
—United States, 2014.
The figure below provides catch-up schedules and minimum intervals between doses for children whose vaccinations have been delayed. A vaccine series does not need to be restarted, regardless of the time
that has elapsed between doses. Use the section appropriate for the child’s age. Always use this table in conjunction with Figure 1 and the footnotes that follow.
Persons aged 4 months through 6 years
Minimum Interval Between Doses
Minimum
Vaccine
Age for
Dose 1
Dose 1 to dose 2
Dose 2 to dose 3
Dose 3 to dose 4
Dose 4 to dose 5
8 weeks
and at least 16 weeks after first dose; minimum age
1
Hepatitis B
Birth
4 weeks
for the final dose is 24 weeks
Rotavirus
2
6 weeks
4 weeks
4 weeks
2
Diphtheria, tetanus, &
6 weeks
4 weeks
4 weeks
6 months
6 months
3
acellular pertussis
3
5
4 weeks
if current age is younger than 12 months and first
dose administered at < 7 months old
8 weeks and age 12 months through 59 months (as final
5
4 weeks
if first dose administered at younger than age
dose)
if current age is younger than 12 months and first dose
8 weeks (as final dose)
12 months
administered between 7 through 11 months (regardless of Hib
This dose only necessary for children aged 12 through
Haemophilus
8 weeks
(as final dose)
vaccine [PRP-T or PRP-OMP] used for first dose); OR
6 weeks
59 months who received 3 (PRP-T) doses before age
influenzae type b
5
if first dose administered at age 12 through 14 months
if current age is 12 through 59 months and first dose
12 months and started the primary series before age
No further doses needed
administered at younger than age 12 months; OR
7 months
if first dose administered at age 15 months or older
first 2 doses were PRP-OMP and administered at younger than
12 months.
No further doses needed
if previous dose administered at age
15 months or older
4 weeks
if first dose administered at younger than age
4 weeks
if current age is younger than 12 months
8 weeks (as final dose)
12 months
8 weeks (as final dose for healthy children)
if current age is 12
This dose only necessary for children aged 12 through
8 weeks (as final dose for healthy children)
if first dose
Pneumococcal
6
6 weeks
months or older
59 months who received 3 doses before age 12
administered at age 12 months or older
No further doses needed
for healthy children if previous dose
months or for children at high risk who received 3
No further doses needed
for healthy children if first dose
administered at age 24 months or older
doses at any age
administered at age 24 months or older
Inactivated poliovirus
7
6 weeks
4 weeks
7
4 weeks
7
6 months
7
minimum age 4 years for final dose
Meningococcal
13
6 weeks
8 weeks
13
See footnote 13
See footnote 13
Measles, mumps,
12
4 weeks
months
rubella
9
Varicella
10
12 months
3 months
Hepatitis A
6 months
11
12 months
Persons aged 7 through 18 years
4 weeks
if first dose of DTaP/DT administered at younger than
Tetanus, diphtheria;
age 12 months
6 months
if first dose of DTaP/DT administered at
4
7 years
4 weeks
tetanus, diphtheria, &
6 months
if first dose of DTaP/DT administered at age 12
younger than age 12 months
4
acellular pertussis
months or older and then no further doses needed for catch-up
Human papillomavirus
12
9 years
Routine dosing intervals are recommended
12
Hepatitis A
11
12 months
6 months
Hepatitis B
1
Birth
4 weeks
8 weeks
(and at least 16 weeks after first dose)
7
7
7
Inactivated poliovirus
6 weeks
4 weeks
4 weeks
6 months
Meningococcal
13
6 weeks
8 weeks
13
Measles, mumps,
12 months
4 weeks
rubella
9
12
3 months
if person is younger than age 13 years
Varicella
10
months
4 weeks
if person is aged 13 years or older
NOTE: The above recommendations must be read along with the footnotes of this schedule.