8 February 2023 - On 20 January 2023, the TGA provisionally approved the Pfizer (Comirnaty) Bivalent Original/Omicron BA.4/5 vaccine for use as a booster COVID-19 vaccine in people aged 12 years and older.
The Australian Technical Advisory Group on Immunisation has evaluated the immunogenicity, efficacy, and safety data on this vaccine.