I don’t know anything about bio-engineering. However, is it not just a wee bit dangerous to engineer a virus to mutate genes.
What happens if this new virus mutates and starts manipulating the wrong genes?
An Honest question from someone who doesn’t know anything about the subject.
"In addition, bacteriophages are notoriously picky about their hosts."
Phages usually, if not always, but maybe, attack just one species or genus of bacteria, their host, IIRC. Drug companies don't care to find new antibiotics which typically are only taken for a short period of time. There's not much money to be made from them.
I read it to mean that this virus doesn't do that. It hijacks the bacteria's cellular machinery to make one protein that simply gets in the way of the bacteria's DNA repair. The virus doesn't mutate the bacteria's own genes.
I could be wrong, though...