The nation's vaccine goals are all about getting 70 to 80 per cent of people aged 16 or more vaccinated.

But that still leaves large numbers of people who aren't vaccinated, and the vast majority of them are kids.

So what's the plan for kids when the country starts opening up and what do we know about when vaccines might be trialled and approved for children?

Also on today's show:

* If two doses of either COVID-19 vaccines offer around 90 per cent protection against hospitalisation and death from the virus, that is still a 1 in 10 chance of being hospitalised if I get the virus. I thought that without being vaccinated the hospitalisation rate was around 1 in 10. I must be missing something here. Can you please explain?

* More on the time gap between AstraZeneca shots in different states.