The presence of microorganisms in or on food can lead to, for example, disease, damage (loss of food), a shortening of shelf life, premature ripening, reduced yield, spoilage and/or rotting. Microbial contamination of food also represents a potential health risk, increasing the likelihood of food poisoning and the like. This disclosure provides methods, uses and compositions which may be exploited as a means to reduce or eliminate the presence of microorganisms on or in food and in turn, the various problems associated therewith. Provided is a method of decontaminating food or a food growing medium, substrate or compost of one or more microorganisms, said method comprising contacting the food and/or the food growing medium, substrate or compost with one or more phage.

This disclosure describes bacteriophages that may be used to improve the selective isolation of Campylobacter from foods or to control antibiotic-resistant bacteria, or both. This disclosure further describes methods of using those bacteriophages.

An antibacterial formulation having a mixture of bacteriophages with lytic activity against strains of Salmonella spp. and a pharmaceutically and veterinarily acceptable vehicle, pH stabilizer and/or excipients. This formulation is for the prevention and treatment of infectious diseases caused by Salmonella spp. and different serovars; use and method for preventing or treating infectious diseases caused by Salmonella spp. in farm animals by administering the antibacterial formulation to a non-human animal orally.

Disclosed herein are bacteriophage compositions and therapeutic uses thereof. The disclosure also relates to bacteriophage that are capable of lysing Klebsiella bacterial strains, e.g., strains that are associated with inflammatory bowel disease, and thereby capable of modulating disease.

A modified bacteriophage capable of infecting a plurality of different target bacteria, which bacteriophage includes a toxin gene encoding a toxin protein which is toxic to the target bacteria; wherein the bacteriophage is lytic; and wherein the bacteriophage expresses host range determinant proteins which have a plurality of bacterial host specificities.

The present invention relates to a novel bacteriophage that lyses Acinetobacter genus bacteria, in particular, Acinetobacter genus bacteria having resistance to antibiotics. The bacteriophage of the present invention can be used in various fields, such as antibiotic composition, feed additive composition, feed, disinfectant, cleaning agent, and a composition for prevention or treatment of an infectious disease caused by Acinetobacter genus bacteria.

The present application provides bacteriophage compositions, and methods of treating or preventing bacterial infections using the bacteriophage compositions. The bacteriophage compositions can inhibit bacterial adhesion, invasion, and/or colonization in epithelial cells. The compositions and methods described herein are useful for treating or preventing mastitis in dairy cows.

Disclosed are recombinant phages that infect and kill bacterial hosts in response to user-defined inputs. The components that encode the user-defined inputs can be combined, such that multiple inputs are maintained on a single recombinant phage, enabling precise control over the targeting strategy. The phages can be engineered to kill a specific bacterial species or multiple species simultaneously. Recombinant phages can also be engineered to harbor fluorescent and bioluminescent reporter genes that enable them to be used for tracking, detection, and in biosensing applications. Recombinant phages can also be used to lyse bacterial cells that produce recombinant proteins, as a rapid method to enable extraction and high-level purification of potentially valuable and/or industrially important proteins. Also disclosed is a system that can also be used to control the activity of a protein of interest, by taking advantage of an interaction between Qtip and a phage repressor protein; a phage repressor protein can be fused to a protein-of-interest, and by controlling the expression of qtip, the phage repressor protein fused to a protein-of-interest will be inactivated when Qtip is expressed and interacts with the phage repressor protein.

A composition for preventing or treating an infection or disease caused by a pathogenic Escherichia coli includes a Myoviridae bacteriophage (Esc-COP-18) having an ability to lyse the pathogenic Escherichia coli and a pharmaceutically acceptable carrier. A method for preventing or treating an infection or disease caused by a pathogenic Escherichia coli includes administering to a subject a Myoviridae bacteriophage and lysing the pathogenic Escherichia coli by the Myoviridae bacteriophage.

Provided herein are methods and compositions for killing a target bacterium. Also disclosed are engineered bacteriophages.