A state government spokeswoman has said data being produced in the daily reports takes time to be uploaded into the infectious disease surveillance data.
"We are asking people to be patient," she said.
"Normally it takes months to analyse this kind data and the team doing it in five hours at the moment. The most up to date information is coming out daily."
Rural Northwest Health has joined Yarriambiack Shire Council in seeking clarification from the state government about reports of a case of coronavirus in the municipality.
Acting chief executive Jo Martin said: "According to surveillance data when you go through to Local Government Areas we don't have a case.
"We don't have a confirmed case in the hospital (in Warracknabeal). It could be someone with an address (registered for Yarriambiack) that doesn't live here anymore," she said.
Mrs Martin said it was also possible if a Yarriambiack person had tested positive for coronavirus, they may have been diagnosed at another health facility and been sent home.
She said regardless of whether or not there was a case in the district, people should take proper precautions to prevent the spread of the virus.
"Our key message is unless you need to go out, stay home," she said.
The Mail-Times has repeatedly sought further information from the Department of Health and Human Services, but is yet to receive a response.
It has also contacted the office of Premier Daniel Andrews.
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