NSW has set new records for COVID-19 hospitalisations and daily caseloads, as the highly transmissible Omicron variant continues its spread.
The state reported 23,131 new cases on Tuesday, 2337 more than the previous day. There were 1344 people in the state's hospitals with COVID-19 on Tuesday, 78 more than the previous record set on September 21 when NSW was in the grips of the Delta variant.
The number of hospitalised patients was 140 higher than the previous day. Two more deaths were reported on Tuesday, men in their 70s and 90s, both of whom had received two doses of the vaccine.
The new cases were diagnosed from 83,376 tests processed in the 24 hours to 8 pm on Monday, with the positivity rate at a record 27.7 per cent. While ICU numbers are rising - 105 at the latest count - they remain well short of the peak of 244 in September.
Intensive care admissions continue to be driven largely by the more severe Delta. Since December 16, about 74 per cent of patients in NSW ICUs for whom the variant is known had Delta, according to a NSW Health spokesperson.
With genomic sequencing impossible to undertake for all new cases, NSW Health is prioritising sequencing for patients in ICU to understand the impact of both the Delta and Omicron variants, the spokesperson said.
The increasing hospitalisation numbers may mask the true picture of the severity of the virus, with a small NSW Health study finding some patients counted in the numbers were actually admitted to hospital for completely different reasons, like childbirth.
NSW Health says with the significant spread of COVID-19 in the community, it's unsurprising that patients admitted for other injuries and illnesses will also be found to have the virus.
Meanwhile, Deputy Chief Health Officer Jeremy McAnulty reminded those returning to work that masks are mandatory in all indoor settings apart from homes.
"We're encouraging people to work from home where it's practical do so," he said.
"This will help minimise the number of people travelling to and from work and in the office."