Sydney's CBD coronavirus cluster suffers HUGE spike as another four mystery community transmission cases are discovered
Sydney's coronavirus cluster has grown by another six people, as New South Wales records 13 new COVID-19 cases.
Of the new cases announced on Friday, one is a returned traveller who is in hotel quarantine and six have been linked to the Sydney CBD cluster.
Four were locally acquired with their source still under investigation.
Two are close contacts of previously reported cases who have not been linked to known clusters.
A Sydney high school and a Catholic primary school have been closed for cleaning after a staff member and a student were diagnosed with coronavirus.
Pictured: A map shows new coronavirus cases visited venues across Sydney's CBD
The NSW Education Department confirmed Ryde Secondary College, in the city's northwest, closed after a staff member tested positive for COVID-19.
Staff and around 1000 students at the co-educational school have been asked to stay home while the contact tracing process begins and the school is deep cleaned.
'All staff and students are asked to self-isolate while contact tracing occurs,' the department said on Friday.
St Gertrude's in Sydney's west is also closed on Friday after a student was diagnosed.
A spokeswoman said the school had around 650 students from Kindergarten to Year 6, and 50 staff who have been advised to isolate at home and monitor for symptoms.
Riverstone High School, Wyndham College and Schofields Public School will reopen on Friday.
Meanwhile, COVID-19 has closed a swathe of venues in Sydney's north from Manly to the Central Coast.
A case from Friday's figures attended Anytime Fitness gym in Marrickville on Monday August, 24, from 7pm to 8pm.
Anyone at the gym at this time is considered a close contact and is required to immediately get tested for COVID-19 and self-isolate for 14 days until September 8.
People who have attended the following venues are considered casual contacts and advised to monitor for symptoms, and immediately isolate and get tested for COVID-19 should symptoms develop:
Other locations on alert are The Matterhorn in Turramurra, Parish of Holy Name in Wahroonga, Liquorland in Marrickville, Eat Fuh in Marrickville and Metro Petroleum in Hurlstone Park
More to come