A health worker takes a swab sample from a man for a rapid antigen test as hundreds of thousands of Senegalese Mouride Brotherhood pilgrims gather for the annual Grand Magal festival, as the global spread of the coronavirus disease (COVID-19) continues, in the holy city of Touba, Senegal October 5, 2020. Picture taken October 5, 2020. REUTERS/Zohra Bensemra