An alert has been issued for people living in 14 Sydney suburbs after coronavirus fragments were detected at a NSW waste treatment plant.
NSW Health has urged residents of the West Hornsby area to get tested for Covid-19 even if they experience the mildest of symptoms.
Everyone in the suburbs serviced by the treatment plant in West Hornsby has been asked to be alert for symptoms and get tested immediately if any appear.
The suburbs included in the alert are Glenorie, Wahroonga, Thornleigh, Pennant Hills, Cherrybrook, Castle Hill, Galston, Dural, Westleigh, Glenhaven, Waitara, Hornsby, Normanhurst and West Pennant Hills.
Those who receive testing need to isolate until they receive a negative result.
Authorities fear unknown active coronavirus cases
The health department said detection of coronavirus in the West Hornsby sewerage could be a reflection of known cases diagnosed in recent weeks.
“However, NSW Health is concerned there could be other active cases in the local community in people who have not been tested and who might incorrectly assume their symptoms are just a cold,” the alert read.
A separate alert for NSW residents was issued on Wednesday over fears the mutant UK strain of Covid-19 detected in Queensland could potentially have made its way into the state.
Anyone who visited, worked or completed mandatory hotel quarantine at Brisbane's Grand Chancellor hotel since December 30 should get tested and quarantine at home until they receive a negative result.
The hotel was shut for deep cleaning after six people - four quarantining guests, a cleaner and her partner - contracted the highly contagious mutant UK coronavirus strain.
NSW recorded one new locally-acquired Covid-19 case Wednesday - a child connected to the 28-person Berala cluster.
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