Saturday, June 5

* Flight attendant arrives in Brisbane on Emirates flight and begins two weeks of hotel quarantine

Saturday, June 19

* Attendant released at 9am after three negative tests

* Hours later she tests positive after further routine test for international air crew

Sunday, June 20

* Authorities list exposure sites visited by flight attendant including Brisbane's Portuguese Family Centre

Monday, June 21

* Queensland records zero cases of community transmission

Tuesday, June 22

* Authorities report one new local case involving a man in his 60s

* He was at the Portuguese Family Centre on Saturday, June 19, when the flight attendant was there

* Authorities say risk is low because he and 35 others who were also there have been isolating since Sunday

* Preliminary investigations suggest a quarantine hotel worker infected the flight attendant

* The worker escorted a infected returned traveller from Mongolia to an ambulance and then went to the flight attendant's room to swab her

* Authorities say "it's possible" the worker went directly from escorting the infected traveller to the attendant's room

* They are reviewing CCTV footage to determine if protocols were breached

Australian Associated Press