A hotel quarantine worker at Melbourne Airport has tested positive for coronavirus, Victorian health officials say.

The woman worked at the airport’s Holiday Inn on Sunday morning before developing systems.

She was tested and returned a positive result.

She had earlier returned a negative test at the end of her shift on Thursday.

Authorities are contacting Holiday Inn Airport workers and other primary close contacts, who are being told to immediately isolate, get tested and remain isolated for 14 days.

Public health teams early on Monday morning identified Marciano’s Cakes in Maidstone, Dan Murphy’s in Sunshine and Off Ya Tree Watergardens in Taylors Lakes as exposure sites.

Thousands of tennis fans had been expected to swarm Melbourne Park for the opening day of the Australian Open on Monday.

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No new cases have been detected among a Grand Hyatt hotel quarantine worker’s close contacts since he tested positive on Wednesday.

The Grand Hyatt was one of three hotels used as part of the Open’s quarantine program and the breach forced more than 500 tennis players and their entourage to isolate as casual contacts of the infected worker.

All eventually tested negative and were released.

AAP

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