Two additional workers at Colac, Vic, based dairy processor Bulla have tested positive to COVID-19, bringing total cases related to the dairy giant to four.
Chief executive Allan Hood has issued a warning that anyone who has worked at Bulla's Connor Street site from August 25 are classified by DHHS as potential close contacts.
"We have unfortunately had two additional team members at our Connor Street, Colac site, return a positive test for Coronavirus (COVID-19)," he said.
"This is now a total of four positive COVID-19 test results within the Bulla community.
"All Connor Street team members are now required to present for mandatory testing, as advised by the Department of Health and Human Services.
"Bulla is working directly with Colac Area Health and testing for those employees has now started at Connor Street at the Scott Street entrance.
"Our Connor Street, site remains closed until further notice.
"The health and safety of the Bulla team is our priority and we are still working in collaboration with the DHHS to ensure all necessary steps are taken to protect our workforce and the local community at this time.
"This continued closure will have an impact on the production and supply of our frozen ranges and our team are working through this with our customers to keep them informed as we do our best to ensure that disruption is kept to a minimum.
"Our four team members who have tested positive are currently in isolation and will continue to do so until they have tested negative against COVID-19.
"We have spoken with them all today and they are recovering well, and we continue to wish them a speedy recovery."
A DHHS spokesman said the department was investigating 10 cases of COVID-19 in Colac identified in recent days.
The contact tracing team has identified numerous people as close contacts, and those people are now in quarantine, he said.
These cases have been linked to Bulla Dairy Foods, Wydinia Kindergarten, and Clearwater Logging & Transport.
"We advise all residents in the area to get tested if they develop symptoms and isolate until their symptoms resolve," he said.
As part of contact tracing, relevant public exposure sites are contacted and provided with advice about the transmission risks and any cleaning that may be required.
Contact tracing and investigations are continuing.
The spokesman said anyone who had been to one of these locations during these times needs to monitor for symptoms.
If you develop even mild symptoms do not go to work, immediately get tested and stay home until your symptoms resolve, he said.
