NSW has recorded 179 new cases of COVID-19, including two with the Omicron variant of concern, bringing the number of confirmed cases of the new strain to four.
There were three COVID deaths recorded in the 24-hours until 8pm on Monday - ending a four day run of zero deaths.
The two latest overseas travellers diagnosed with the Omicron COVID-19 variant of concern arrived in Sydney from southern Africa on Singapore Airlines flight SQ211 on Sunday. They are fully vaccinated and isolating in the Special Health Accommodation.
NSW Health is contacting all the passengers on flight to advise they are a close contact and will need to get tested immediately for COVID-19 and isolate for 14 days, regardless of their vaccination status.
NSW Health is also investigating two COVID cases who arrived in NSW on flight QR908 last Thursday.
Both are isolating at their homes and urgent genomic sequencing is underway to determine whether these cases have been infected with the Omicron COVID-19 variant.
All passengers on the flight must be tested immediately and isolate until a negative result is received.
Another international traveller, who is isolating at their home in Sydney after arriving on a flight from southern Africa last Tuesday, has tested positive for the Delta variant.
This person also travelled to Melbourne on flight VA800, departing at 6am on Thursday and returned to Sydney on flight QF486, which departed Melbourne at 7pm that evening.
Passengers in the surrounding seats on flight VA800 from Melbourne to Sydney have been deemed close contacts and all other passengers and air crew are casual contacts.
All travellers arriving in NSW who have been in South Africa, Lesotho, Botswana, Zimbabwe, Mozambique, Namibia, Eswatini, and Malawi in the 14 days prior to arriving in NSW must stay in hotel quarantine for two weeks.
The latest COVID deaths include a western Sydney man in his 40s with underlying health conditions who died at Nepean Hospital. He had received one dose of a COVID-19 vaccine.
A man in his 50s who had received one dose of the vaccine and had underlying health conditions, died at Tamworth Base Hospital.
A woman in her 60s from south eastern Sydney died at St Vincent's Hospital. She had received one dose of a COVID-19 vaccine and also had underlying health conditions.
NSW Health said 62,166 tests were conducted in the past day.
Some 94.5 per cent of people aged 16 and older have had one dose of a COVID-19 vaccine, while 92.4 per cent are fully jabbed.
More than 81 per cent of teens aged 12-15 have had one dose of a vaccine while 76.5 per cent of them have had two doses.
There are 160 people in hospital with COVID-19, 26 are in ICU and 11 are ventilated.
