Health authorities have detected very low levels of coronavirus fragments in Colac wastewater, prompting advice for anyone with symptoms to get tested.
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Victoria's Department of Health and Human Services said on Tuesday that initial testing of wastewater taken from the Colac wastewater treatment plant on November 23 was inconclusive and further analysis of the sample followed.
"The results received yesterday showed that very low levels of viral fragments were present," a statement said.
"The department is urging anyone with symptoms, especially if they have been in the Colac area to get tested."
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.
Colac Otway Shire was cleared of coronavirus on October 6.
Tuesday was the 32nd straight day where Victoria has recorded zero daily cases.
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