The reason for 'vaccinated people bringing it there' is that vaccinated people are travelling ...derrrrr
The unvaxxed thousands of people infected in townships in Gauteng are not even travelling to the testing centre.
I will repost the following from other thread here:
Update: we now have 7 cases in NSW, 4 of which in quarrantine. The other three were in community out and about for days arriving before Omicron was announced, and found through back testing of previous cases, So far no one has got it from them in community despite their prolific community mingling.
The three arrived on two flights from Doha (Tuesday 23 and Thursday 25) , the 25th one was originally from Southern Africa, whilst the other two probably picked it up on flight from other southern Africans.
So far so good, our vaccinations, yjough not foolproof, is providing a buffer, even though we have totally unrestricted movement