Patrice Debr is a professor and chief of I'munology at Piti -Salp tri re Hospital, in Paris, and directs a research unit at the French National Institute for Health and Medical Research (Inserm). He is the author of Louis Pasteur (2010), Le Roman de la vie (1999) and Jacques Monod (1998). Jean-Paul Gonzalez is a virologist and the director general of the International Medical Research Centre of Franceville, Gabon. He is the author of Virus mergents...