TOPSHOT - A worker uses a pool vacuum to clean the pool at an aquatic complex in Medellin on March 17, 2020 after the closure of all sporting venues in Colombia as a preventive measure against the spread of the new coronavirus, COVID-19. - Quarantine, schools, shops and borders closed, gatherings banned, are the main measures being taken in many countries across the world to fight the spread of the novel coronavirus. (Photo by Joaquin SARMIENTO / AFP)