PERTH, AUSTRALIA – JANUARY 08: Australian Border Force personnel are seen at Perth Airport on January 8, 2021 in Perth, Australia. The international arrival cap has been lowered and all domestic and international air travellers are now required to wear masks as Australia takes precautions due to concerns over a new Covid-19 strain. Brisbane will enter a three-day lockdown tonight after a cleaner working at a quarantine hotel tested positive for the new Covid-19 variant. (Photo by Matt Jelonek/Getty Images)
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