COVID-19 Vaccination Schedule

The same COVID-19 product should be used for the:

  • Primary series
  • Additional dose for moderately to severely immunocompromised people.

Any of the COVID-19 vaccines can be used for booster vaccination, regardless of the vaccine product used for primary vaccination. When a heterologous or “mix and match” booster dose is administered, the eligible population and dosing intervals are those of the vaccine used for primary vaccination.

To get the best protection, if a second dose of vaccine is required, patients need to know:

  • Which vaccine product they received
  • When to schedule their next appointment to receive the second dose

Reminder Systems and Strategies for Increasing Adult Vaccination Rates



Page last reviewed: October 27, 2021