Morning mail: Melbourne cluster at 16, US divided over Trump acquittal, Myanmar crisis

Thursday: Pfizer vaccine to arrive this week as Victoria deals with hotel quarantine outbreak. Plus: should you brush your teeth with toothpaste tablets?

Good morning, it's Imogen Dewey kicking off your week on Monday 15 February, with the latest on Melbourne's Covid cluster, Donald Trump's impeachment acquittal, and the ongoing problem of dark money in Australian politics.

There are now 16 confirmed cases in the outbreak linked to Melbourne's Holiday Inn quarantine hotel, with 940 primary close contacts identified. One expert is blaming poor infection control" in Victoria. Still, the federal health minister Greg Hunt says there's a light at the end of the tunnel with the Pfizer vaccine due to land this week and shots to begin in the last week of February, as scheduled. As the UK hits its milestone of 15m vaccinations, China has fired back at the US over allegations Beijing withheld information about the virus outbreak from World Health Organisation investigators. And Auckland is now in a three-day lockdown after New Zealand confirmed three new cases this weekend.