For months now, experts have been saying we'll need three doses to be protected from coronavirus, especially the Omicron variant.

And now, it's official.

Yesterday, the rules changed and people over 16 will be required to have all three doses of a COVID vaccine to be considered "up to date".

So why make the change now when previously two vaccines were considered good enough? And might it mean for vaccine mandates down the track?

Also on today's show:

* Should me and my family just go out and get Omicron?

* Should I wait the full eight weeks to get my daughters second vaccination or should I do it at six?

* Does testing positive just after my booster reduce its effectiveness?