* International flights into Melbourne resuming from Thursday, after the program was paused in February because of a coronavirus outbreak that put Victoria into a five-day lockdown

* Arrivals capped at 800 in the first week, expected to increase in the second week to 1000

* 4991 first doses of the Pfizer vaccine delivered to quarantine workers as of April 5 and nearly half of those have also received their second dose. Only staff who have received at least the first dose are working in the quarantine program

* 2823 staff have undergone N95 mask fit testing and refresher training

* Resident testing doubled to days zero, four, 12 and 14 of quarantine

* New QR app for staff sign-ins and contact tracing

* Additional screening at Melbourne airport

* Six hotels in the program - Holiday Inn Melbourne Airport, Intercontinental, Novotel Ibis Melbourne Central, Pan Pacific (airline crew), Holiday Inn on Flinders (COVID-infected guests) and Element Melbourne Richmond (guests with medical conditions and complex needs). Another six hotels to join the program after ventilation improvements

* All quarantine staff tested daily, with day-off testing encouraged

Australian Associated Press