Bacteriophages to be used to prevent food poisoning

The FDA has recently approved the use of a mixture of bacteriophages, or viruses that infect bacteria, for spraying on meat before packaging in order to kill the disease-causing bacterium Listeria. This is likely the first significant practical application of bacteriophages outside of the laboratory. Hopefully, the use of multiple types of virus will prevent the emergence of Listeria strains resistant to destruction.