Twelve residents at an aged care home have been rushed to hospital after testing positive to Covid-19 amid Sydney's Delta outbreak.
An aged care worker at the Wyoming Nursing Home in Summer Hill in Sydney's inner-west tested positive to the virus on July 27.
The partially-vaccinated employee, who was asymptomatic, is believed to have brought the virus into the home from the community.
A spokesman for the home - which is also known as Hardi Summer Hill - said 80 per cent of its 65 residents and 75 per cent of its 60 staff were fully vaccinated.
The aged care outbreak came as New South Wales recorded 239 locally-acquired cases on Sunday - a joint pandemic record for new infections in the state in one day.
Twelve residents at the Wyoming Nursing Home in Summer Hill in Sydney's inner-west have been rushed to hospital after testing positive to Covid-19 amid the city's Delta outbreak
'Twelve residents have been identified as positive for Covid-19,' a Wyoming Nursing Home spokesman said.
'They have been transferred to hospital as a precaution and the staff member, as well as her close contacts, are now in isolation.'
The home has been locked down to all visitors and residents still in the home are in self-isolation, the spokesman said.
'Expert infection prevention and control staff, infectious diseases staff as well as clinical staff are on site to ensure adherence to strict infection control processes including correct personal protective equipment to ensure the safety of residents and staff,' the home said in a statement
NSW Deputy Chief Health Officer Dr Jeremy McNulty on Sunday announced several cases have been identified across aged care facilities, impacting Australia's most vulnerable age groups.
'There are a number of aged care facilities across the city that have been affected, with staff and residents infected,' Dr McNulty told reporters.
'On a regular basis we are seeing cases in hospital settings or aged care settings and we have even had some disability settings as well.'
Dr McNulty said the contagion is spreading through a facility in the city's inner-west, but most of those who have so far tested positive were vaccinated.
'There is an outbreak in a Summer Hill aged care facility with I understand nine residents affected,' he said.
'Fortunately, many of those have been vaccinated. As I understand it, the ones with vaccination are doing relatively well.'
New South Wales recorded 239 locally-acquired cases on Sunday - a joint pandemic record for new infections in the state in one day. Pictured are Sydneysiders on Bondi Beach on Sunday
Dr McNulty said he did not have information about why some of the nine elderly residents were not vaccinated.
NSW Premier Gladys Berejiklian meanwhile said trends show transmissions are taking place in workplaces and households.
Ms Berejiklian said 'pleasingly' the bulk of the cases were not outside the main eight Sydney