Concentrated bacterial cultures having probiotic action in human and farm animal organisms, for medical or veterinary use, to be used in the production of vaccines for human use and vaccines for veterinary use in particular for anti-flu vaccines, or antiviral vaccines for the preventive treatment of flu; microorganism cultures, in particular lactic bacteria having probiotic action in human and farm animal organisms, for medical or veterinary use in the treatment of intestinal inflammations, inflammatory bowel diseases and inflammations of the lower gastrointestinal tract, for the treatment of ulcerative colitis and Crohn's disease in which inflammation is present both in the small intestine and in the colon, for use in preventing intestinal inflammation in which inflammation is present on the intestinal wall, and for use in the treatment and prevention of antibiotic associated diarrhea; pharmaceutical products for treating or eliminating bacteria, fungi and viruses on the skin and in the mucous membranes; enteric compositions, comprising cultures of microorganisms having probiotic action for medical and veterinary use to treat intestinal diseases; pharmaceutical products comprising bacteria cultures for the preparation of vaccines for veterinary use in particular for anti-flu vaccines or antiviral vaccines for the preventive treatment of flu