Member for Polwarth Richard Riordan said a second cluster had exploded in Colac from a single coronavirus case to the current count of 24.

The virus was reintroduced to the city after a middle aged Colac man attended a medical appointment in Melbourne.

He returned home, spread COVID-19 to immediate family members who then infected others in the community.

That included those who attended a party on Saturday, August 29, which is still the subject of a police investigation into potential coronavirus regulation breaches.

"If metropolitan hospitals are so unsafe and infection control is so poor then other steps need to be taken to protect country communities," Mr Riordan said.

"The Colac resident, and others who need to attend Melbourne for critical health appointments, need to be mindful they are going into high risk areas - Melbourne and hospitals.

"There are people attending special appointments in Melbourne from the country all the time. It's staggering it hasn't happened before now.

"Extra measures need to be put in place. How are we ever going to take the next step and get below five cases."

Mr Riordan said one of the patient's family members was a health care professional.

"The man is completely innocent and has done nothing wrong, but that is how easily this virus can be spread," he said.

"These government controlled facilities, like hotel quarantine and hospitals, are how this virus can spread in the community.

"This patient could have been an absolute saint and I understand his family members had very few symptoms but still we have another cluster.

"If hospitals are so rampant then addition precautions need to be taken."

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