Greater Bendigo's active coronavirus cases have decreased for the fourth consecutive day despite a rise in daily case numbers.

Active cases in Bendigo now stand at 617 after being 771 on Friday.

On Saturday morning, Greater Bendigo recorded 105 cases - up from the 62 recorded on Friday.

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Around central Victoria, the Macedon Ranges had the next largest number of daily cases with 27 recorded.

Mount Alexander (13) and Gannwarra (11) also recorded a double digit number of new cases.

Other shires that recorded new cases were Buloke (8), Campaspe (7), Central Goldfields (3) and Loddon (2).

COVID-19 response commander Jeroen Weimar said Victoria's testing system had returned to its usual efficiency.

"Just on 94 per cent of (PCR) results were back the next day," he said. "So we are back to having a fast testing system and I would encourage people to keep the testing going."

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Mr Weimar also said the availability of rapid antigen tests would again increase this week.

"There have been 2.2 million RAT distributed in the last couple weeks," he said. "You can get RATs at testing sites (if you are symptomatic).

"We are seeing a growing availability (of RATs) in the testing system but also at supermarkets and other retailers, We will be allocating another eight million this week alone and 4.5 million have are already with schools ready for them to open on Monday.

"From next week, student and staff at primary, secondary and specialist schools will do twice a week RAT surveillance to an keep eye on the level of COVID moving through communities."

10am:

The planned pop-up vaccination clinic for Kennignton Primary School has been moved to the state-run clinic in Mollison Street.

"The temperature in the buildings was too high for a vaccination clinic," a Bendigo Health spokesperson said. "The clinical team decided it was unsafe to vaccinate children at the site."

About 200 students were booked to be vaccinated at Kennington PS. All bookings scheduled for the Kennington PS site will be honoured at Mollison Street.

Earlier:

VICTORIA recorded 12,250 new COVID-19 cases and 31 deaths on Friday.

The new infections were detected among 6006 home rapid antigen tests and 6244 laboratory run PCR tests.

Victoria's active cases have dropped below 80,000 to 79,836 after being at 101,605 on Friday.

A total of 953 were in hospital on Friday, 114 in intensive care and 39 on ventilators.

Another 31,422 were tested for COVID-19 and 22,139 were vaccinated as hot weather affected opening times for some venues including in Kennington.

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Bendigo recorded 62 new cases on Thursday, with updated numbers for Friday expected later on Saturday.

The municipality had 833 active cases in another day of steady declines in total numbers.

Federal health minister Greg Hunt says booster vaccines for teenagers aged 16-18 years of age could be ready to roll out soon after the Therapeutic Goods Administration provisional approval to pharmaceutical company Pfizer.

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Meanwhile, police are investigating a fake letter in Mr Hunt's name that a company allegedly used to illegally import unapproved rapid antigen tests.

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