NSW reported two Covid-19 deaths on Sunday, one of which was a woman aged in her 30s.
NSW Premier Gladys Berejiklian announced two people had died including a woman aged in her 70s and a woman aged in her 30s with no pre-existing conditions.
Ms Berejiklian said the woman aged in her 30s had no underlying health concerns before contracting the virus.
"Anybody thinks this is a disease just affecting older people please think again," she said.
The woman aged in her late 30s was from Sydney's CBD and she died at Royal Prince Alfred Hospital, the woman aged in her 70s was from Sydney's southwest and died at Campbelltown Hospital.
There have now been eight Covid-19 deaths in the most recent outbreak.
Dr Jeremy McAnulty described the deaths as "tragic events" and said there are now 141 people in hospital with Covid-19.
Of those 141 patients, 60 are under the age of 55, and 28 are under the age of 35.
A teenager is among the 43 people in the intensive care unit.
Seven people aged in their 20s are also in the ICU, three are in their 30s, 14 are in their 50s, 12 are in their 60s and six are in their 70s.
"So this is affecting people of all ages with very serious disease," Dr McAnulty said.
He added of the 43 people in intensive care, 42 have not been vaccinated, one patient had one dose of the vaccine.
More to come.
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