Scheduling Doses
*You may administer COVID-19 vaccines and other vaccines at the same visit, as well as within 14 days of each other. When deciding whether to administer COVID-19 vaccines and other vaccines, you should consider whether the patient is behind or at risk of becoming behind on recommended vaccines. You should also consider the patient's risk of vaccine-preventable diseases (e.g., during an outbreak) and the reactogenicity profile of the vaccines.
#Every effort should be made to determine which vaccine product was received as the first dose. In exceptional situations in which the vaccine product given for the first dose vaccine product cannot be determined or is no longer available, any available mRNA COVID-19 vaccine may be administered at least 28 days after the first dose.
**Administer the second dose as close to the recommended interval (28 days) as possible. If the second dose is not administered within 42 days of the first dose, the series does not need to be restarted. Doses inadvertently administered less than 28 days apart do not need to be repeated.
## Consider an additional dose (i.e., third dose) 28 days after the initial 2-dose primary series for moderately to severely immunocompromised patients. For more information, please see Interim Clinical Considerations for Use of COVID-19 Vaccines Currently Authorized in the United States at www.cdc.gov/vaccines/covid-19/info-by-product/ clinical-considerations.html.
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CDC COVID-19 vaccine (Moderna) materials for healthcare professionals |
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