Update, 2.15pm: A strong reading of coronavirus fragments in Colac wastewater is likely from a former positive patient who has returned home, health authorities say.
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Department of Health and Human Services Testing Lead Jeroen Weimar said there was a "strong testing result" of the virus in the wastewater over the last few days and urged anyone in the community to get tested.
It follows the detection of low levels of viral fragments on November 23. Further samples will be taken today for testing.
"After the detection in Colac we've been following up with daily testing and we are encouraging anyone in Colac with any symptoms to please come forward and get tested," he said.
"We've identified somebody who has come back and we have good reason to believe they are still shedding virus in significant volumes.
"We're pleased we've made connection to this individual, but in a town of 1500 people if you are unwell come forward for testing, and we'll be targeting major employment sites in the town.
"This person was an old COVID case, there's no concern, this individual has been on our radar for a while and we are pleased they are back home."
The department says people who have or have recently had COVID-19 may shed fragments of the virus and these can enter wastewater through toilets, sinks and drains.
This viral shedding may come from different sources - such as used tissues, off hands and skin, or in stools - and last for several weeks beyond a person's infectious period.
Anyone who has visited Colac or been in the Colac area on Monday or yesterday and has even the mildest of symptoms should get tested. Testing is available at Colac Neighbourhood House, 23 Miller Street from 9am - 12.30pm tomorrow and Friday.
Meanwhile every single person involved in Victoria's Hotel Quarantine program will be tested daily when the state opens up to arrivals on Monday, Mr Weimar said.
Up to 3000 people will be working in the quaratine program.
There were 12,177 tests in last 24 hours.
Today marks 33 days without any positive COVID-19 detections in Victoria.
A woman in her 20s whose test result produced an indeterminate result on Monday was confirmed yesterday as a negative result, which was confirmed by the expert review panel.
The Victorian Government is continuing to monitor the situation in South Australia and will be guided by the health advice.
A permit is required to enter Victoria from South Australia unless an exemption applies. Permits are available from the Service Victoria website.
Information regarding COVID-19 is available at the DHHS website or by calling 1800 675 398.
Testing site details, including opening hours, are available at: dhhs.vic.gov.au/where-get-tested-covid-19
More information about travel to and from South Australia is available at dhhs.vic.gov.au/information-people-travelling-sa-vic-covid-19
Earlier, 8.30am: Victoria has recorded no new COVID-19 cases and no new deaths but health authorities are urging people in the Colac region to get tested.
They have found coronavirus fragments wastewater in Colac.
Testing on Tuesday showed very low levels of the virus in the wastewater system.
Health authorities are urging residents and those who visited the area between November 21 and 23 to get tested and stay home until they get their results back.
A total of 12,177 people were tested for coronavirus on Tuesday, a rise from 6874 the day before.
The Department of Health and Human Services this morning thanked everyone who got tested.
It has now been 33 days since the last active COVID-19 test was recorded in Victoria.
Yesterday, Western Australia announced it would allow unrestricted travel over its borders from December 8 for every state except South Australia, which is currently dealing with a COVID-19 outbreak..
Travellers from NSW and Victoria will still be required to undergo health screening and a temperature check at the airport, complete a G2G pass outlining recent travel and take a COVID-19 test if necessary.
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