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). This is now a total of four positive COVID-19 test results within the Bulla community," he said.

"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 is 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.

Earlier, 2.30pm: A new active coronavirus case has been recorded in Colac Otway Shire and in Corangamite Shire, which has been virus free since July 23.

The Department of Health and Human services has listed 12 cases in Colac, up from 11 yesterday, with total ever cases sitting at 104.

It comes after Bulla Dairy Foods confirmed a second case of the virus linked to its Connor Street facility in Colac today.

There is one active case in Corangamite Shire, which has only ever had three cases.

Cases remain unchanged at two in Warrnambool and zero in Moyne Shire, Glenelg Shire, Golden Plains Shire and Southern Grampians Shire.

Greater Geelong has 40 active cases, Greater Bendigo has eight active cases and Ballarat has five active cases.

There are 10 cases in Moorabool, three in Surf Coast Shire and two in Horsham.

Victoria's recording of 2415 active cases on Wednesday represents a drop of more than 1000 cases on the same time last week when Victoria recorded 3488 cases on August 26.

Of the total cases, 17,823 cases are from metropolitan Melbourne, while 1154 are from regional Victoria.

Total cases include 9198 men and 10,011 women.

Update, 12.25pm: A new case of coronavirus has been linked to the Bulla Dairy Foods site in Colac.

The Connor Street icecream factory remains closed after a worker tested positive to the virus on Monday.

Chief executive Allan Hood said the remaining three team members who were awaiting their test results have all now received negative results.

"We have unfortunately had a second team member at our Connor Street, Colac site, return a positive test for Coronavirus late yesterday," he said.

"Our remaining three team members who were awaiting their test results have all now received negative results.

"At this stage, we are working through required next steps with the Department of Health and Human Services and Connor Street will remain closed until further notice.

"Both individuals are currently recovering at home and we will continue to do everything we can to support them along with the wider team during this time. During the site's temporary closure, all employees will be paid as per their normal roster.

"We anticipate that this continued closure will have some impact on the production and supply of our frozen ranges. We are working with our customers to keep them informed and will do our best to ensure that disruption is kept to a minimum."

Earlier, 11.30am: Premier Daniel Andrews has announced the extension of the State of Disaster until September 13.

Previously set to expire at 6pm today, the State of Disaster will be renewed until 11.59pm on September 13 2020, bringing it into line with the existing State of Emergency declaration and allowing advice about any future continuation to be made once the government's roadmap for easing restrictions has been released.

"We think having both frameworks being on the same timetable is important for when we get to the roadmaps on the weekend," he said.

"It doesn't mean the State of Emergency or Disaster automatically come off on the 13th, those decisions and roadmap out must be and will be driven by the data and number of mystery cases where we know the source.

"The numbers will drive the decisions the government takes, the State of Emergency are the rules and the State of Disaster informs the appropriate rules.

"They need to be renewed on the 13th of this month."

The State of Disaster is a legal mechanism to underpin a number of the current Stage 4 restrictions, including the curfew and the 5km limit for exercise and shopping within metropolitan Melbourne.

It allows allows Victoria Police and Protective Services Officers to enforce the public health directions for those who are doing the wrong thing.

Victoria has recorded a small increase in coronavirus cases overnight, up from 70 cases on Tuesday to 90 new cases and six deaths on Wednesday.

All those deaths are linked to aged care, with five men in their 80s and one man in his 90s passing away.

There are 406 Victorians in hospital, with 18 in intensive care and 13 on ventilators.

An additional 13,912 tests were carried out, closing out 24 more mystery cases with an unknown source.

Of the state's 2415 active cases, 332 are healthcare workers, 125 are in regional Victoria, 1177 are in aged care and 35 are disability settings comprising of 23 staff and 12 residents.

There are now 40 cases in Geelong, eight in Bendigo and five in Ballarat.

Chief Health Officer Brett Sutton praised the state's third consecutive day of double-digit cases, but believes there are still more than 100 cases in the state each day.

"It's good to see three consecutive days of double figures, especially when Wednesday can be a spike day, there has been more testing but we want to see more testing to identify the cases out there.

"There's absolutely more stabilisation in numbers, there's only three or four new cases in the whole of regional Victoria on a daily basis now, same as aged care where there's been stablisation of active outbreaks."

READ MORE:

Our COVID-19 news articles relating to public health and safety are free for anyone to access. However, we depend on subscription revenue to support our journalism. If you are able, please subscribe here. If you are already a subscriber, thank you for your support.