The spike in NSW cases came as a raft of restrictions eased across the state, but authorities are still urging residents to be careful and book their booster shots.

Boosters are currently available for people aged 18 years and older who received their second dose at least five months ago.

Premier Dominic Perrottet said the additional shot was vital to keep people safe as the state began to return to some normality.

"As we reopen in a measured and safe way, people need to keep rolling up their sleeves to get their first and second jabs and their booster shots," he said.

"We have some of the highest vaccination rates in the world, but there will continue to be challenges thrown at us, and everyone must follow the rules to help combat new variants and keep people out of hospital."

Booster eligibility will increase steadily in 2022, with about 40 per cent of the state's population being eligible at the end of January, 64 per cent in February, 87 per cent in March, and 91 per cent by April 2022.

Meanwhile, the state yesterday recorded 1360 new cases of COVID-19 and one death as the Omicron variant continued to spread rapidly. Following the revelation of the case numbers, chief health officer Kerry Chant encouraged residents to continue wearing a mask, adding it was a small "impost".

"I would urge everyone to continue to wear their masks in an indoor environment and remind you that you could have COVID and not have any symptoms, so that simple action is a community-minded action," she said.

A breakdown of the case numbers by local government area is not available, as the MLHD recently switched from daily to weekly updates with a focus on vaccination and testing numbers. For testing locations, go to www.mlhd.health.nsw.gov.au.