A man poses to show his face mask with an image of Our Lady of Aparecida, patron saint of Brazil, as he waits to be attended by a physician during a day of free health checks for people showing symptoms of the novel coronavirus, COVID-19, at the Unidos de Padre Miguel samba school headquarters in Rio de Janeiro, Brazil, on May 24, 2020. - A volunteer group of physicians and nurses are seeing residents of Vila Vintem favela, every Sunday, inside the headquarters of the samba school. Brazil, the hardest-hit country in the region, has surpassed 20,000 deaths due to the COVID-19 coronavirus, according to figures released by Brazil's Ministry of Health. (Photo by Mauro PIMENTEL / AFP)