SYDNEY, AUSTRALIA - SEPTEMBER 30: Qantas flight number 4 from Honolulu, a Boeing 747-400 aircraft flies over a Qantas A380 aircraft as she arrives at Sydney Airport on September 30, 2018 in Sydney, Australia. The Boeing 747, the "Jumbo Jet" celebrates its 50th birthday today having first rolled out of its custom-built assembly plant in Everett, Washington, USA on September 30th, 1968. The "Queen of the Skies" as she is affectionately called has been a favourite aircraft of millions of passengers for her entire flying life. (Photo by James D. Morgan/Getty Images)
Urgent genomic testing has begun to determine whether two international flight passengers who tested positive to COVID-19 after arriving in Sydney on Saturday night are carrying the new Omicron variant of concern.