The group of J-M Sallenave is working on host-pathogens interactions in the lung, primarily involving bacteria (e.g. Pseudomonas aeruginosa) and viruses. They Study in vitro and in vivo  the role of Pseudomonas aeruginosa infections (an opportunistic pathogen in pulmonary nosocomial infection and in cystic fibrosis) in exacerbations of chronic lung diseases.