None of the people hospitalised as part of Victoria’s latest COVID-19 outbreak had been fully vaccinated, Chief Health Officer Brett Sutton has revealed.

The state recorded another four new locally acquired infections yesterday as the state worked to wrap up the tail end of its Delta outbreak. 

All of the cases have been linked to known outbreaks and all had been in quarantine throughout their infectious period.

The cases were detected from 25,779 test results processed on Saturday. 

There are now 161 active infections in the state, including those linked to hotel quarantine.

That’s a drop of 19 since a day earlier, when 180 cases were active.

Professor Sutton said authorities had analysed the vaccination status of the 204 locally acquired cases between July 12 and July 28. 

He said while the small sample size meant it was not an analysis that could be applied universally, the “moment in time snapshot” revealed the protection offered by inoculation.

“Of those 204, at the time of their infection, 25 cases had received at least one dose of a vaccine, and only 10 of that 204 were fully vaccinated,” he said.

“… But of those 10 positive cases who were fully vaccinated, none of them were hospitalised. All were either completely without symptoms or had mild symptoms.”

Both the Pfizer and AstraZeneca vaccines are proven to have extremely high levels of efficacy against serious illness and death, and can provide a significant reduction in the chances of contracting COVID-19 at all.