The number of coronavirus cases linked to the Australian Lamb Company in Colac has risen to 78, with a total of 87 in the Colac Otway Shire.
Glenelg Shire has 13 active cases, while Warrnambool, Moyne and Southern Grampians shires each have one.
There have been 729 confirmed COVID-19 cases in regional Victoria.
Portland District Health will offer drive-thru testing without an appointment on Wednesday, it revealed on its Facebook page.
The testing is available to people with symptoms.
On Tuesday, Premier Daniel Andrews announced hefty fines for people caught breaching isolation rules.
'From today, a new infringement offence for a breach of the CHO directions will be introduced to target those people who are failing to self-isolate after testing positive to coronavirus or being identified as a close contact," Mr Andrews said.
"A fine of $4957 can be issued to a person who is found to breach the requirement to be self-isolating for a second or subsequent time - the highest on the spot infringement Victoria Police can issue to a person."
Mr Andrews urged people to do the right thing.
"Those doing the wrong thing will cop a fine from Victoria Police, because the only way to beat this deadly virus is if we all follow the rules," he said.
"We have a massive team going door to door to support all Victorians - including more powers and resources to Victoria Police to catch anyone who thinks they can get away with doing the wrong thing."
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