Health authorities have identified six travellers who were staying at Adelaide’s Playford Hotel when a fellow guest caught the virus.

A further six Victorians may have been exposed to the virus after staying at the same South Australian quarantine hotel where a Melbourne man is suspected of catching COVID-19.
The Department of Health has identified six people now in Victoria as having left the third floor of Adelaides Playford Hotel during the potential transmission period.
All have been contacted and are now urgently being tested as they undergo another 14-day quarantine stint.
SA authorities have issued similar orders for 10 discharged returned travellers still in their state.
File image of medical staff working at a COVID-19 pop-up testing centre. Credit: LUIS ASCUI/AAPIMAGE
It comes as the Victorian government cracks down on businesses flouting QR code check-in rules after the states latest coronavirus scare exposed flaws in the system.
Contact tracing efforts were hampered this week as some patrons at the Curry Vault restaurant, where the infected Melbourne man dined on Friday night, failed to use the QR code system.
A general view of the exterior of the Curry Vault Indian Restaurant & Bar in Melbourne. Credit: JAMES ROSS/AAPIMAGE
In response, the state government on Thursday announced businesses breaking check-in rules will face a new $1652 on-the-spot fine, and further penalties of up to $9913 and prosecution for repeated breaches.
Checks last week showed more than a third of businesses are not complying with QR code rules.
It follows authorities dishing out 165 enforcement notices and 300 warnings as part of a three-week blitz of 4000 cafes, shops and restaurants in April.
The breaches included a lack of signage, failing to use QR codes, and not having a COVID-safe plan.
While most businesses are doing the right thing, Acting Police Minister Danny Pearson said others were letting down Victorians after the state fought to defeat its deadly second wave.
The Victorian government is continuing to crack down on businesses flouting QR code check-in rules. Credit: AAP
The Services Victoria QR code system will only become mandatory for businesses from the end of May, with the opposition questioning why it didnt follow NSWs lead earlier.
An average of 28,000 check-ins are being registered on the system every day, with more than 91,000 businesses signing up.
Health authorities, meanwhile, are still awaiting test results for about 30 close contacts of Melbournes most recent virus case.
Of the 121 primary close contacts of the infected man from Wollert in Melbournes north, 90 have returned negative tests so far.