Live breaking news: NSW records 78 new cases

Daily cases in NSW have dropped but a crucial Covid figure is not following, leading authorities to issue a strong warning.

NSW has seen a drop in its daily covid cases, with 78 new infections recorded in the past 24 hours but there are concerns about "missing links" in new transmissions and a stubborn number of cases who were out in the community.

Authorities are concerned about cases emerging outside of southwest Sydney - where the majority of new cases are being discovered - saying there are 'missing links' of transmission.