Prime Minister Scott Morrison has been accused of messing up the response to Victoria's COVID-19 aged care outbreak after sending in junior nurses to fight the deadly virus.

Victorian officials have warned of a "sh*tshow" in the sector after they were forced to break into medical cabinets in a Melbourne nursing home.

A blame game has erupted between the Morrison Government and Andrews Government in Victoria over the coronavirus outbreak in the state's nursing homes as 769 aged care residents and workers have become infected with the coronavirus.

Daniel Andrews, Victorian Premier, has expressed his frustration at the Morrison government as he noted that aged care was the Morrison Government's responsibility.

“I’ve spoken with the Prime Minister. Ministers have been speaking. Officials have been speaking. It was a very long night, but this is a critical challenge,’’ he said.

“The Commonwealth has asked for assistance. They’ve asked for certain things and that’s exactly what they will get.”

Andrews has said that infection control is so poor in some private nursing homes that he wouldn't let his mother stay there.

“I would not let my mum be in some of these places, I just wouldn’t,’’ he said.

“I cannot stand here and tell you that I have confidence that staff and management across a number of private sector aged care facilities are able to provide the care that is appropriate to keep their residents safe.”

The Prime Minister said that the situation is "very concerning" and has cut short a visit to Queensland to devote himself to the aged care crisis.

“We have just over 80 facilities out of just over 430 in Victoria which have been affected. Not all severely, but some of those cases have been far more severe,’’ he said.

Health Minister Greg Hunt confirmed that the Victorian Public Health Unit instructed all staff at St Basil's to immediately self-isolate.

“Seventy-nine of 115 residents have now been transferred,” Mr Hunt said.

“Our role is to make sure that those remaining residents are safe, and the advice that I had as of late last night and early this morning is that the conditions are stable. The staffing is led by a very experienced nurse unit manager.”