The resident from the Willandra Village in Macquarie Park (pictured) is in hospital, with other residents and staff who were in close contact with the individual, asked to self-isolate.
A 91-year-old woman who was a resident of Dorothy Henderson Lodge also died on Saturday morning, bringing its number of deaths to four.
Opal’s Bankstown aged care facility – where a resident tested positive last week – also now has four confirmed cases.