ANALYSIS / Since the beginning of May, more than a hundred suspected cases of monkeypox, a disease originating in Africa, have been detected in several European countries as well as in North America, Australia and Israel. . What is this virus? Who is concerned? Should we be worried regarding this spike in cases? Engaged for 3 years in the Afripox project, which aims to better understand monkey pox in its region of emergence, Camille Besombes, infectious disease doctor and doctoral student in the unit of Arnaud Fontanet, project coordinator, takes stock.