Advertisement On June 20, a physiotherapist from Perth’s northern suburbs who had travelled to Sydney to attend an event outside the city boarded a plane bound for WA. Unknown to her, she had been infected with the highly contagious Delta variant of COVID-19 while having brunch at a popular Bondi cafe that would soon be listed as a virus hotspot. Health officials test a woman for COVID-19 at a drive-through clinic in Mindarie. Credit:Matt Jelonek/Getty Images A COVID-19 test taken the day after her return to Perth came back negative but after developing flu-like symptoms five days later, a second test revealed she was infected.