On 11 September, the United States Food and Drug Administration (FDA) approved COVID-19 vaccines updated to include a monovalent component that targets currently circulating variants.
Bivalent Moderna and Pfizer COVID-19 vaccines are no longer authorised for use in the US.
In Australia, bivalent COVID-19 vaccines (those which target the original/ancestral strain of the virus as well as an Omicron subvariant) continue to be recommended for primary vaccination and boosters in people aged 12 years and older.
Read more in the FDA’s press release: FDA: Updated mRNA COVID-19 vaccines
Current ATAGI advice on bivalent COVID-19 vaccines:
ATAGI: Recommendations on use of the Pfizer bivalent COVID-19 vaccine (February 2023)
ATAGI: Recommendations on use of the Moderna bivalent COVID-19 vaccine (February 2023)
ATAGI: Advice on the preferential use of bivalent COVID-19 vaccines for primary vaccination of people aged 12 years or older (May 2023)