Sixty-seven new cases of coronavirus were confirmed in Victoria on Saturday, one of them in Yarriambiack Shire.
No cases have yet been confirmed in the Horsham, Hindmarsh, West Wimmera, Northern Grampians or Ararat municipalities.
A Victorian Department of Health and Human Services spokesperson said the organisation could not provide further information on the case.
"The public can be confident that all close contacts will be identified and responded to accordingly as required to protect public health" he said.
"As part of our contract tracing, any public exposure sites are contacted and provided with advice about the transmission risks and any cleaning that may be required."
He said there had been three confirmed cases of COVID-19 in Victoria that may have been acquired through community transmission.
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"Currently six people are recovering in hospital, and 70 people have recovered. More than 22,900 Victorians have been tested to date," he said.
"Of the total 296 cases, there have been 256 in metropolitan Melbourne and 25 in regional Victoria. A number of cases remain under investigation.
"Everyone has a role to play in protecting yourself and your family. Hands should be washed regularly with soap and water. Cough or sneeze into a tissue or your elbow.
"If you are ill, stay at home.The Victorian Department of Health and Human Services has a hotline for public information on COVID-19 which is 1800 675 398.
"Large numbers of calls will result in some delays and we ask Victorians for their patience as we work to manage the volume. Further information is also available at https://www.dhhs.vic.gov.au/coronavirus."