Abstract: Described is a method for the treatment or prevention of GI tract dysbiosis in a subject, said method including administering an effective amount of a non-viable Methylococcus capsulatus or a lysate of Methylococcus capsulatus to said subject. The invention further provides a method for the treatment or prevention of a disease or condition selected from small intestine bacterial overgrowth (SIBO), small intestine fungal overgrowth syndrome (SIFO), GI tract cancers, breast cancer, neurological disorders, malnutrition, chronic fatigue syndrome, autism, cardiovascular diseases and GI tract infections in a subject with GI tract dysbiosis, said method including administering an effective amount of a non-viable Methylococcus capsulatus or a lysate of Methylococcus capsulatus to said subject. A non-viable Methylococcus capsulatus or a lysate of Methylococcus capsulatus for use in said methods is further provided.

Abstract: The invention provides a method for the treatment or prevention of GI tract dysbiosis in a subject, said method comprising administering an effective amount of a non-viable Methylococcus capsulatus or a lysate of Methylococcus capsulatus to said subject. The invention further provides a method for the treatment or prevention of a disease or condition selected from small intestine bacterial overgrowth (SIBO), small intestine fungal overgrowth syndrome (SIFO), GI tract cancers, breast cancer, neurological disorders, malnutrition, chronic fatigue syndrome, autism, cardiovascular diseases and GI tract infections in a subject with GI tract dysbiosis, said method comprising administering an effective amount of a non-viable Methylococcus capsulatus or a lysate of Methylococcus capsulatus to said subject. A non-viable Methylococcus capsulatus or a lysate of Methylococcus capsulatus for use in said methods is further provided.

Abstract: The present document discloses a new species of Bizionia, herein denoted Bizionia piscinecroseptica and a reference strain of this bacterium denoted Bizionia sp. 130524K2F7 which has been deposited at the National Collection of Industrial and Marine Bacteria and has been assigned accession number NCIMB 42183. Further disclosed is the medical use of bacteria of the genus Bizionia for vaccinating fish against a new disease identified and herein denoted bizioniosis.

Abstract: The present invention relates to novel compositions for medical use, particularly for use as vaccines. The present invention relies upon the dependence of the bacteria of the species Alliivibrio wodanis (formerly Vibrio wodanis) in the pathogenesis in the unrecognized, novel disease wodanosis (Norwegian: odinose), as well as in the chronic disease stages of winter ulcer in a composition together with Moritella viscosa (M. viscosa). in addition, it is also related herein to a composition comprising inactivated bacteria of one or more culture(s) of the species M. viscosa cultivated in physical contact with cells of A. wodanis to improve the technical composition and protection of a vaccine against winter ulcer. The invention also relates to use of such vaccine compositions in prevention and/or treatment of wodanosis and winter ulcer, methods for the production of such vaccines, and to methods for preventing, controlling and combating Alliivibno wodanis infection and chronic winter ulcer in fish.