Between 500 and 600 Australian Open players, officials to go into isolation

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Between 500 and 600 Australian Open players, officials and support staff will go into isolation after a worker at one of the event's quarantine hotels tested positive for coronavirus. 

A 26-year-old man who works  at the Grand Hyatt has tested positive for Covid-19;  believed to be the UK strain of the virus. 
This was one of the hotels where some of the 1,000 players, officials and support staff stayed to complete a 14-day quarantine period on their arrival in Australia. 
500-600 people were deemed to be "casual contacts" of the man.

Players will be free to return to competing after a negative test.

The Australian Open, which was pushed back by three weeks to enable players to quarantine, starts on Monday.

https://www.bbc.com/sport/tennis/55904746