Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

The present invention relates to Siphoviridae bacteriophage Vib-ANP-1(accession number KCTC 13075BP) having the ability to specifically kill Vibrio anguillarum bacteria and a genome represented by SEQ ID NO: 1 and isolated from nature, and a method for prevention or treatment of Vibrio anguillarum bacterial infection by using a composition containing the same bacteriophage as an effective ingredient.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Methods and compositions are provided for preventing or reducing symptoms or disease associated with Xylella fastidiosa or Xanthomonas axonopodis in a plant. The invention provides novel bacteriophages virulent to Xylella fastidiosa or Xanthomonas axonopodis, including XfaMija and XfaMijo, and further provides methods for treating or preventing Pierce's Disease or Citrus Canker in plants.

The present invention relates to Siphoviridae bacteriophage Lac-GAP-3 (Accession Number KCTC 12816BP) having the ability to specifically kill Lactococcusgarvieae bacteria and a genome represented by SEQ ID NO: 1 and isolated from nature, and a method for prevention and treatment of Lactococcusgarvieae bacterial infection by using a composition containing the same bacteriophage as an effective ingredient.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Engineered bacteriophage and methods of forming the bacteriophage are described. Multivalent bacteriophage are described that can include multiple different exogenous polypeptides that include specific binding agents for proteinaceous targets at a surface of the capsid head. Therapeutic compositions, e.g., antiviral compositions, and methods of forming are described. A therapeutic composition can include an engineered bacteriophage that includes a polypeptide binds a pathogen or binds a cellular receptor of a pathogen at a surface of the bacteriophage. The engineered bacteriophage are free of nucleic acids encoding the exogenous polypeptide(s).