The monovalent (original) COVID-19 mRNA vaccines (Pfizer and Moderna) are no longer recommended for use in the U.S.
The CDC now recommends that everyone ages 6 years and older receive a bivalent mRNA COVID-19 vaccine, regardless of whether they previously completed their (monovalent) primary series.
Individuals ages 6 years and older who have already received a bivalent mRNA vaccine do not need to take any additional shot at this time, unless they are 65 years and older or immunocompromised.
Individuals >65 years who have received a single dose of a bivalent vaccine may receive one additional dose at least four months following their initial bivalent dose.
Individuals > 6 years who are immunocompromised and have received a bivalent COVID-19 vaccine may receive an additional dose of a bivalent COVID-19 vaccine at least 2 months following a dose of a bivalent COVID-19 vaccine, and additional doses may be administered at the discretion of their health care provider.
Note: non-mRNA COVID-19 vaccines (Novavax and Johnson & Johnson) are not affected by this change and remain available as alternatives for people who cannot or will not receive an mRNA vaccine.