Professor Brett Sutton said the idea was to concentrate resources on tier one sites.

He said authorities were still contacting every positive case and their household and close contacts were being quarantined appropriately.

"We have to focus our efforts where we will get most bang for buck, most efficiency of contact tracing," Professor Sutton told reporters in Melbourne at the daily press conference.

"We are doing well on those metrics, there are so many of them, whether or not we capture that information."

But he said the sheer volume of information available for tier two sites meant it was failing to get through to the public.

"People can't go through 100 pages of tier two exposure sites, online, they simply won't," Professor Sutton said.

"It's not an effective use of all of that energy and human resource, that can be put into the best and most effective interventions, which relate to household transmission and transmission of those close contacts.

"You will see we will be publishing the highest risk tier sites as well as letting households know and businesses know, what they need to do, for those particular higher risk exposures."

He said tier two websites would likely drop off the Victorian government's website progressively over the coming days.

READ the full list here: Three new COVID exposure sites in Ballarat, new wastewater detections

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