IL10 and Chronic colitis: We have recently shown that 5 to 6 months old IL-10−/− mice harboring a conventional intestinal microbiota and suffering from chronic colitis could be stably infected with C. jejuni at intermediate levels in approximately 70% of cases, but symptoms were rather subtle and, hence, ”classical” clinical signs of severe human camplyobacteriosis such as bloody diarrhea were missing.