The Office of the Gene Technology Regulator (OGTR) is on its way to approve a licence application from PaxVax Australia (PaxVax) for the intentional release of a GMO vaccine consisting of live bacteria into the environment in Queensland, South Australia, Western Australia and Victoria.
According to the regulator, it qualifies as a limited and controlled release under section 50A of the Gene Technology Act 2000 (the Act).
https://www.sott.net/article/269791-Australia-determined-to-vaccinate-by-release-of-aerosolized-GMO-vaccine