Yesterday, NSW reported eight new community transmission cases of coronavirus with seven of those cases already linked to the Northern Beaches outbreak.

The one remaining case's source is still under investigation, but what's known is that it was a healthcare worker who transported a symptomatic family of three from the airport on 14th of December.

It's likely the latest leak from the hotel quarantine system, which in the last month has become quite common.

Along with the latest case, there was a cleaner who got COVID while working in a quarantine hotel, a driver who picked it up while transporting aircrew, and the still unknown source who started the Northern Beaches outbreak.

So on today's Coronacast, with four leaks in three weeks, what's going on?

Also on today's show:

* Shout out for NSW contact tracers

* What's going on with the NSW hotel quarantine system?

* Australia exports coronavirus to Singapore

* And more on the new infectious strain in the UK