It comes as a Bendigo machinery hire business has closed up shop after a positive COVID-19 person visited last week.

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Delecca's Bendigo general manager Leigh Delecca confirmed that staff had been notified the business was now listed as an exposure site on Friday afternoon.

"We got notification from the Department of Health on Friday and were told someone from Shepparton had visited last week and had since tested positive," she said.

"The department is dealing with everything through us and deep cleans are about to take place.

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"We're taking every precaution we can to ensure all of our staff and the community are kept safe."

Traces of COVID-19 were first detected in Shepparton wastewater last week, but a cluster of cases has grown to 17 throughout the day.

Goulburn Valley Health chief executive Matt Sharp said everyone who has tested positive were family members of the original case, a man in his 30s.

However the family members are from two separate households. The origin of the man's infection is unknown.

All of the positive cases are isolating.

Staff at Blacklocks Ford Wodonga who dealt with a casual COVID-19 contact have been sent home from work and told isolate until they get a negative test result.

Blacklocks Ford dealer principal Michael Dixon said between dropping their car off for a service at the Wodonga business on Friday morning and picking it up that afternoon, a teacher at Shepparton's St Mel's Primary School received a text saying they were a casual contact of a positive case connected to the school.

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Mr Dixon said the casual contact notified the Blacklocks staff when picking up their car.

Another case has also been confirmed in Little River.

If you're looking to get tested, you can do so at Bendigo Health, the Bendigo Respiratory Clinic in Spring Gully, Apsley Street in Strathfieldsaye or Hospital Street in Heathcote.

You can find more information online here.

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