A busy shopping centre and its Coles supermarket has been listed as one of 17 locations visited by confirmed cases of coronavirus in recent days.
Several exposure sites have been revealed as Western Australia's Perth and Peel regions were thrust into another three-day snap lockdown overnight to curb further community transmission.
A man who arrived in Perth from Shanghai on April 3 spent 14 days in quarantine, but was then active in the community for five days before leaving for Melbourne, where he tested positive for Covid-19.
Two cases have since been detected in the WA community, with those who visited potential exposure sites urged to get tested immediately and isolate until a negative result is received.
Most recently, a positive case visited Star Family Medicine Practice in Caning Vale, south of Perth, on Friday between 9am and 11am.
A case also visited Terry White Chemmart in Kardinya, southwest of the city, on Thursday between 7.10pm and 8.30pm, as well as the Sleat Road clinic of DB Dental in Applecross between 8am and 6pm.
WA's health department holds particular concern over the dining hall in the Heim building at St Catherine's on Park in Crawley, with anyone who visited between 12.01am on Sunday and 11.59pm on Wednesday urged to get tested.
The Southlands Shopping Centre, specifically Gilbert's Fresh Markets, Coles and BankWest, in Willeton, south of the city, was visited by a positive case on Wednesday between 3pm and 3.30pm.
The Leisurefit Aquatic Centre in Booragoon was visited on the same day between 5.30pm and 7.30pm, as was the dining hall in the Heim building at St Catherine's on Park between 7am and 9am.
There was also a positive case moving around the T3 and T4 QANTAS domestic terminal at Perth Airport between 11am and 1pm on Wednesday.
A positive case visited City China Garden in Northbridge, in the inner city, on Tuesday between 5pm and 8pm, and on Monday the Good Fortune Roast Duck House, also in Northbridge, between the same hours.
The Fortune Acupuncture Chinese Medical Clinic was visited by a positive case on Monday as well between 1.30pm and 3pm, as well as the dining hall in the Heim building at St Catherine's on Park between 7am and 9am.
On Sunday, the Fortune Five Chinese Restaurant in Northbridge was visited between 5.30pm and 7pm, the Kitchen Inn in Kardinya between 12pm and 2pm, and the Brentwood Deli in Mount Pleasant between 8.30am and 9.30am.
Bananabro in East Victoria Park was visited by a positive case on Saturday between 5.30pm and 8pm, and the Leisurefit Aquatic centre in Booragoon between 3.30pm and 6pm.
For a full list of exposure sites, including additional flights that carried potentially infected people, visit the health department's Healthy WA page.
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