A Moroccan health worker wearing protective gear collects a nasal swab for a Covid-19 express PCR test at a centre, part of the local "smart vaccinodrome" campaign, in the Errahma district near the city of Casablanca, on August 9, 2021. - The digitalised centre aims to vaccinate 3,000 to 4,000 people per day and has its entire vaccination process through a QR code system that allows citizens to be traced throughout the vaccination circuit. (Photo by FADEL SENNA / AFP) (Photo by FADEL SENNA/AFP via Getty Images)