There are 14 active cases of coronavirus in Sutherland Shire, according to the latest NSW Health figures.
Three new cases have been added in the last 24-hours.
The source of two cases is unknown.
The Caringbah and Menai postcode areas have the highest number of cases, four each, while four postcodes have none.
The figures, by residential postcode, up till 8pm on July 12:
NSW chief health officer Kerry Chant said on Monday the emergence of cases in young adults aged 18 - 20 in the Georges River, Bayside and Sutherland Shire council areas was a concern.
"They are spreading it to their closest friends and family, so its crucial young adults limit their social interactions and come forward for testing."
COVID alerts have been issued for specified times at a large number of shire venues.
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