The present invention relates to novel bacteriophages specific to Klebsiella pneumoniae strains, and compositions comprising the same. Particularly, polypeptides and their coding nucleic acid molecule of the novel bacteriophages are provided. The invention also relates to applications of the novel bacteriophages and the polypeptides in the detection/treatment/prevention of infection caused by Klebsiella pneumoniae strains. Development of immunogen and vaccine on the basis of the polypeptides are also provided.

The present invention relates to novel bacteriophages specific to Klebsiella pneumoniae strains, and compositions comprising the same. Particularly, polypeptides and their coding nucleic acid molecule of the novel bacteriophages are provided. The invention also relates to applications of the novel bacteriophages and the polypeptides in the detection/treatment/prevention of infection caused by Klebsiella pneumoniae strains. Development of immunogen and vaccine on the basis of the polypeptides are also provided.

Provided herein are antibacterial compositions and methods of making and using the compositions.

Bacteriophage covalently attached to a carrier particle with an average diameter of from 0.1 microns to 15 microns, are used in topical treatment of bacterial infection. Bacteriophage covalently attached to a carrier particle of average diameter 7 microns or less are used in systemic treatment of bacterial infection. A plurality of bacteriophages lytic against different bacterial strains gives wide antibacterial activity. A combination therapy comprises administration of antibiotic and bacteriophage covalently attached to a carrier particle.

The present invention relates to multi-peptide structures comprising at least one heterogenous functional site wherein the at least one heterogenous functional site is composed of at least two homologous peptides, which differ by at least one amino acid, a method for providing such multi-peptide structures, compositions comprising such multi-peptide structures as well as the use of such multi-peptide structures and compositions as an universal anti-microbial agent, in particular in medicine, chemistry, biotechnology, agriculture and/or food industry.

An encapsulated bacteriophage formulation and a method for encapsulating bacteriophages and bacteriophage-related products in polymeric microcapsules is provided. Some embodiments of the method of producing the encapsulated bacteriophages involves a water-in-oil-in-water double emulsion.