New infections are still occurring in aged neglect homes because the staff get infected in the community and take the virus to work, often before they develop symptoms. 
Nothing has been done to increase the number of Registered Nurses in aged care centres, so infection control has not improved and the virus spreads. 
The only way to fix this is for the federal government to impose staff ratios, such as a RN for each 10 residents on day shifts,  as is the rule in state government aged care centres,  which have had very few infections. 
This was the lesson from NewMarch House and Dorothy Henderson Lodge in Sydney, but it was ignored, resulting in 665 deaths in Victorian aged care out of 801 deaths. 
The same process happened in Victorian hotel quarantine. Staff caught the virus in the community and took it into the hotels where it spread because casual staff were not trained in infection control. 
This will continue until the rules are changed to require permanent staff trained in infection control to be used. Victoria has now fixed this by bringing in Corrective Services officers trained in infection control in prisons. 
This virus is not going away, even with a vaccine hopefully next year, so society will have to permanently change the rules of how it operates. Casuals are out - permanent staff with proper training are the way to go, I reckon. 
Coronavirus is here to stay. The sooner we accept that, the better | Coronavirus outbreak | The Guardian