While COVID-19 is currently in two of Australia's states and the ACT, the reality is eventually it will get everywhere.

And eventually, the theory goes, COVID-19 will infect everyone.

Vaccination will help stop the vast majority of people getting severe symptoms which may put them in hospital, but there'll always be people who can't or won't be immunised.

So does getting COVID-19 after being vaccinated help with longer term immunity? And therefore if you're fully vaccinated, is it worth trying to get infected on purpose?

Also on today's show:

* How many people don't get their second dose?

* What might happen now in NSW?