12 December 2021 - Spikevax (Moderna), also referred to as the Moderna COVID-19 vaccine, has been provisionally approved for use as a COVID-19 booster vaccine in people aged 18 years and older by the TGA.
The dosage for use as a booster dose is 50µg (0.25 mL), i.e. half of the recommended dose of the Moderna COVID-19 vaccine used for the primary course.