Australia is about to approve the Moderna vaccine.
Australia's third COVID-19 vaccine is expected to be approved by the Therapeutic Goods Administration (TGA) within the next fortnight.
In May, Australia reached a deal to buy 25 million doses of the Moderna vaccine, which is another mRNA vaccine.
Health Minister Greg Hunt has indicated the first doses of the vaccine are expected to be rolled out from mid-September.
Ten million of Australia's doses from Moderna will be its existing vaccine, and 15 million will be the updated booster shots that target new variants.
On Thursday, Moderna said the vaccine was about 93 per cent effective through six months after the second dose.
The six-month data also suggested that Moderna's vaccine still provided 98 per cent protection against severe disease and was 100 per cent effective at preventing death caused by COVID-19.
However, the data does not include the vaccine's performance against the more contagious Delta variant.
