I wonder what caused that….
Australia’s public broadcaster mandated the shots for their staff (especially in Melbourne) and pushed them on the general public VERY VERY AGGRESSIVELY.
Their chairman at the time Ita Buttrose even appeared in Pfizer ads.

ABC listen
ABC newsreader Isk Razak facing Bell's Palsy: 'It's probably most notable when I smile' - ABC listen
'The first inkling I had was feeling like I was talking out the side of my mouth'