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COVID-19 Vaccination Schedule*
*
Note: Timeline is approximate. Intervals of 3 months or fewer are converted into weeks per the formula “1 month = 4 weeks.”
Intervals of 4 months or more are converted into calendar months.
Vaccine 0 month 1 month 2 month 3 month 4 month 5 month 6 month 7 month
Pfizer-BioNTech
(ages 6 months
– 4 years)
Pfizer-BioNTech
(ages 5
–11 years)
(at least 5 months after last dose)
Monovalent Booster Dose
3
1
st
Dose
Moderna
(ages 12 years
and older)
Moderna
(ages 6 months
–11 years)
2
nd
Dose
1
Bivalent Booster Dose
2 3
(at least 2 months after last dose)
Bivalent Booster Dose
2 3
(at least 2 months after last dose)
Bivalent Booster Dose
2 3
(at least 2 months after last dose)
1
st
Dose
2
nd
Dose
1
1
st
Dose
1
st
Dose
(4–8 weeks after
1
st
dose)
(4–8 weeks after
1
st
dose)
2
nd
Dose
1
(3–8 weeks after
1
st
dose)
(3–8 weeks after
1
st
dose)
Pfizer-BioNTech
(ages 12
years
and older)
1
st
Dose
2
nd
Dose
1
(3–8 weeks after
1
st
dose)
1
st
Dose
Novavax
(ages 12 years
and older)
2
nd
Dose
1
(3–8 weeks after
1
st
dose)
2
nd
Dose
1
(at least 8 weeks
after 2
nd
dose)
3
rd
Dose
1
st
Dose
Janssen
4
(ages 18 years
and older)
(at least 2 months
after 1
st
dose)
Bivalent Booster Dose
2 3
See Guidance for COVID-19 Vaccination
Schedule for People Who are Moderately or
Severely Immunocompromised.
An 8-week interval may be optimal for some
people ages 6 months–64 years, especially for
males ages 12–39 years. A shorter interval (3
weeks for Pfizer-BioNTech; 4 weeks for
Moderna) between the first and second doses
remains the recommended interval for: people
who are moderately or severely
immunocompromised; adults ages 65 years
and older; and others who need rapid
protection due to increased concern about
community transmission or risk of severe
disease. For more information, view
the CDC Interim Clinical Considerations.
For people ages 12 years and older, an age-
appropriate COVID-19 bivalent vaccine booster
dose is recommended, regardless of the
primary series given. For people ages 12-17
years a Pfizer Bivalent booster dose may be
used. For people ages 18 years and older,
either Pfizer or Moderna Bivalent COVID-19
booster may be used.
The bivalent booster dose is administered at
least 2 months after completion of the primary
series. For people who previously received a
monovalent booster dose(s), the bivalent
booster dose is administered at least 2 months
after the last monovalent booster dose.
Janssen COVID-19 Vaccine should only be used
in certain limited situations.
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