Yesterday was another coronavirus donut day for Western Australia, which also comes as there's been a huge increase in testing numbers.

While Perth and some surrounding areas remain in lockdown, both testing numbers and the zero cases will give health authorities a little bit more confidence that there isn't an undetected coronavirus cluster bubbling away.

But if we come back to hotel quarantine where this all started, part of the concern was that the guard was infected with the new so-called UK strain of the virus, which has been shown to be more infectious than previous variants.

So on today's Coronacast, if the UK variant is much more infectious - why haven't we seen more cases?

Also on today's show:

* Norman's been invited to some more Zoom seminars on vaccine rollouts. What's he learnt?