The study suggests:
Some bacteria have a similar, built-in, gene editing system to the CRISPR-Cas9 system that they use to respond to invading pathogens like viruses, much like an immune system.
Using CRISPR the bacteria snip out parts of the virus DNA and keep a bit of it behind to help them recognise and defend against the virus next time it attacks.
To simplify with:
It has been scientifically proven that bacteria can help protect against viruses. The quality of our health almost entirely depends on the quality of microorganisms within the body. Use of antibiotics can disrupt these microbes.
It has been observed, those who are able to digest bacteria or overcome a bacterial infection without the use of antibiotics are less likely to be infected by viruses.
Scientists seem to be more interested in gene editing and finding new cures instead of supporting the naturally gifted immune system.