After details analyses, FDA found a mix of bacteria-killing viruses to be safe for usage on food. These viruses were particularly grown to kill the harmful bacteria that kill hundreds of people a year.

This is the first-ever approval of viruses as food additives and they will be safely sprayed on cold cuts, hot dogs and sausages ie on ready-to-eat meat.
The viruses are called bacteriophages and are effective only against the Listeria monocytogenes bacterium that causes serious infection called listeriosis in those with impaired immune system, pregnant women and children.

The viruses are grown in a preparation of the very bacteria they kill, and then purified and they attack only Listeria bacteria and not the human cells and are therefore safe.

The Department of Agriculture will regulate the use of the product and the consumers won’t even know that their food was sprayed with viruses.
The manufacturer Intralytix is also working on another bacteriophage product that would kill E. coli bacteria on beef before it is ground. Now that would be a breakthrough.
Bacteriophages have long been studied as an alternative to antibiotics.