Alert on shigellosis, a gastroenteritis that is increasingly difficult to treat

On his screen, the curve rises constantly. “Something is happening,” exclaims Professor François Xavier-Weill, sitting with his back to a wall of files. It is there, between his cramped office and one of the labs, that this scientist from the National Reference Center for Digestive Bacteria at the Institut Pasteur hunts down these invisible enemies, tracks their progress and sounds the alarm in the country.