I am very interested in this aspect.
I haven't found a consumate article about the relationship between bacteria and viruses, but it looks like there's a symbiosis somehow.
Whenever I would eat a trigger food ( acidic), I would get gut symptoms, neurological symptoms, and then, (bip), a shingles outbreak.
I've read that some viruses are PH dependent, though I think it's much more than that.
I wonder if the increased acids from lactic acid formation or acid intake, damages cells, (tenderizes), making them more susceptible to viral replication.
There are folks here who would be much more adept at this subject, but since I've had an obvious experience, I wrote about it.
I know someone could easily say, 'correlation doesn't mean causation', but I can and have,( accidentally), repeated this many times for many years, with painful success.
Again, this is anecdotal, so a lab would have to takeover to prove it. Maybe they have, already.