FILE PHOTO: A passenger stands next to a COVID-19 testing centre sign in the International arrivals area of Terminal 5 in London’s Heathrow Airport, Britain, August 2, 2021. REUTERS/Peter Nicholls
FILE PHOTO: A passenger stands next to a COVID-19 testing centre sign in the International arrivals area of Terminal 5 in London’s Heathrow Airport, Britain, August 2, 2021. REUTERS/Peter Nicholls