Colac, Vic, dairy processor Bulla Dairy Foods has confirmed 20 employees who are household members of a defined close contact are currently in isolation and will not need to be re-tested if that close contact tests negative.
The dairy company said all 247 Connor Street staff, where the Bulla outbreak first occurred, need to be retested for COVID-19 in line with state guidelines.
The site will be deep cleaned today and reopened on Saturday.
Chief executive Allan Hood said when the results of their Connor Street close contact household members come back as negative, those 20 isolating employees will be able to return to work.
DHHS confirmed on Tuesday night that all results from the surveillance testing conducted at Bulla's Forest Street site in Colac last Thursday are also negative.
"The remaining Bulla Colac team members at the Forest Street, Innovation Centre and Kelly Court sites who were tested have all been permitted to continue working with no self-isolation required following their tests," Mr Hood said.
"There is no requirement for this group to be retested."
There are six positive cases linked to Bulla Dairy Foods in Colac after an employee tested positive on August 30.
Local health authorities said this second outbreak in Colac came from a man who travelled to a Melbourne hospital for treatment and got infected with the virus, and brought it back to Colac.
There are now 25 active cases in Colac-Otway Shire from that single case.
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