The number of active COVID cases in St George has risen by 15 in three days to 63.
Six cases in the Georges River council area have an unknown source and there are two in the same category in the entire Bayside Council area.
The biggest increase is in postcode 2210 (Lugarno, Peakhurst, Peakhurst Heights), where five new cases have taken the total to nine.
There are three new cases in the Hurstville and Brighton-Le-Sands postcode areas.
NSW Chief Health Officer Kerry Chant reiterated on Friday the Georges River and Bayside council areas, along with Sutherland Shire, continue to be a concern and called for higher test numbers.
Dr Chant said her "vision" for this weekend in Sydney was "very much stay at home".
"Do not leave the house unless it is absolutely critical to do so," she said.
NSW Health postcode figures for St George up till July 15:
- 2205 (Arncliffe, Turrella, Wolli Creek): 3
- 2207 (Bexley, Bardwell Park): 2
- 2208: (Kingsgrove): 0
- 2209 (Beverly Hills, Narwee): 4
- 2210 (Lugarno, Peakhurst, Peakhurst Hts): 9
- 2216 (Brighton-Le-Sands, Kyeemagh, Rockdale): 6
- 2217 (Monterey, Kogarah, Ramsgate): 4
- 2218 (Allawah, Carlton): 6
- 2219 (Dolls Point, Sans Souci, Sandringham): 6
- 2220 (Hurstville, Hurstville Grove): 9
- 2221 (Blakehurst, Carss Park, Connells Point: 5
- 2222: (Penshurst): 5
- 2223 (Mortdale, Oatley): 4
NSW recorded 97 new locally acquired cases in the 24 hours to 8pm on Thursday night.
Dr Chant said on Friday the fact that that 29 of these cases were infectious in the community for two or more days in the community was "incredibly concerning".
"I can't stress to the community my absolute concern that we need to reduce our mobility and interactions with others if we are going to bring this situation under control and see a decline in cases infectious in the community.
"We need to remember the cases we are seeing today reflect transmissions which occurred four or five days ago, up to 14 days ago, so anywhere around you, you may have cases.
"Every time you leave the house this weekend, please consider that the person you may come in contact with has COVID.
"My vision for this weekend is very much a 'stay at home'. Do not leave the house unless it is absolutely critical to do so."
COVID alerts have been issued for specified times for a large number of shire venues.