The Northern Territory has recorded three new cases of COVID-19 overnight, including a baby who has been hospitalised.
The infant is the child of a previous positive case from Robinson River and has been taken to the Royal Darwin Hospital for treatment.
One of the other infections is a partially-vaccinated man in his 40s, who had already tested negative twice as a close contact of another case.
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NT Chief Minister Michael Gunner said the man became symptomatic yesterday, then received a positive result.
The third case is a woman in her 20s.
Mr Gunner said one of the cases recorded yesterday was a man who worked for the Director of Public Prosecutions in Darwin, who is believed to have caught the virus at a fish and chip shop, proving the real risk of community transmission.
The new infections bring the number of cases linked to the Katherine cluster up to 40.
Greater Katherine lockdown to continue
Mr Gunner said wastewater testing showed there are undetected COVID-19 cases in Katherine.
He said Katherine would continue to have some form of lockdown or lockout until December 4.
"That does not mean the whole period will be a lockdown, we will transition at some point to a lockout and I cannot give you any more comfort on when that will be yet," he said.
Yesterday Mr Gunner extended the Greater Katherine lockdown until 6pm tomorrow, after it had been planned to end at 6pm yesterday.
A total of 77 per cent of the eligible population in Greater Katherine are fully vaccinated against the virus.
Rogue man injects himself at NT vaccination clinic
Northern Territory Police Commissioner Jamie Chalker said there was an incident at a Northern Territory vaccination clinic this morning.
He said a man became aggravated with the vaccination process and brushed away a nurse's attempt to vaccinate him, before the man grabbed the needle and injected himself.
The man was tracked down and given a fine for disorderly behaviour.
