TOPSHOT - A boy plays with a monkey in the courtyard of a private residence in the Moanda district in Franceville on November 21, 2020. - Working in remote recesses in the hearth of the Gabonese forest, scientists scour caves populated by bats, animals suspected of being at the origin of many epidemics transmitted to humans in recent years: the SARS in 2003, MERS in 2012, Ebola and now SARS-CoV-2 or novel coronavirus Covid-19. (Photo by STEEVE JORDAN / AFP)