The man was from the metropolitan Adelaide area and had contracted the virus interstate.

He was being treated in the hospital’s intensive care unit.

The national death toll now sits at 45, after two more fatalities were recorded in New South Wales and Victoria overnight.

The total number of confirmed coronavirus cases in South Australia is 411, including 10 people in intensive care as of yesterday afternoon, all at the Royal Adelaide Hospital, in Adelaide’s CBD.

The state recorded just two new positive cases yesterday and the day before.

Police Commissioner and state coordinator of the coronavirus response, Grant Stevens, said it was “a stark reminder that we are dealing with a treacherous enemy”.

“Sadly, I don’t think this gentleman will be the last person who will die as a result of COVID–19,” he said.

“So the work that the emergency services and health workers are doing to enforce these restrictions and support those people who are testing positive, along with the amazing contribution of the community in complying with these restrictions, is still important.”

Stevens said nine fines and 13 formal cautions had been given in a week to people breaching isolation and social distancing rules, while almost 3000 self-quarantine compliance checks had been done.

“Our observance is that most people are genuinely trying to do the right thing, so where we can see that there is an effort to comply, we’re providing that education and further instructions to people so they fully understand their obligations,” he said.

“But anybody who receives a fine I would suggest would be blatantly disregarding [the rules].”