Full list of Perth exposure sites visited by FIFO worker as WA Premier holds fire on lockdown Western Australia Premier Mark McGowan says a very weak positive case has been detected in a FIFO worker, who was "probably or possibly" infectious in the Perth community for weeks. Crystal WuDigital Reporter August 5, 2021 - 9:00AM Premier Mark McGowan has revealed a FIFO worker has tested positive for the Alpha variant of COVID-19, but remains tight lipped as to whether the state will plunge into another lockdown. The fly-in-fly-out worker, a maintenance contractor in his 30s from Fortescue's Cloudbreak mine site, had returned a "very, very weak" positive test.