In a nutshell, we showed that over-the-counter cheap generic antibiotic neomycin can be repurposed in nasal formulation to prevent & treat infection, block transmission, and reduce disease burden against a wide array of viruses. Since this is a host-directed strategy and virus-agnostic, it holds promise as a prophylactic strategy against any viral threat.
The advice in the screencapped thread was to apply a little with a q-tip to the inside of the nostrils.
There is no info on any dangers of doing this very often, but if you can't avoid a high-risk environment it's worth trying.
Here's a thread about the study. https://threadreaderapp.com/thread/1782535781338222960.html
here's the study: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5918160/
I am not anything, but a doc during am outdoor first aid cert course insisted that the real benefit of Neosporin was that it was petroleum jelly and it created a hydrophobic/biologically inert barrier over cleaned/irrigated membranes and wounds (blocking vectors of infection), and that every bug was already resistant to its antibiotic mix and had been for decades.
I did take a bunch of biology and microbio and he made a very convincing case for using petroleum jelly on nicks, cuts, etc.
but I am, again, not any sort of human health professional.
There's an old folk remedy that putting petroleum jelly around your nostrils helps hayfever, by absorbing pollen, I imagine that could be what's happening here.
you have nothing to lose but your grains
This isn't saying the antibiotic prevents covid it's saying it stimulates an anti viral response in the nose, thats separate from it being an antibiotic so resistance doesn't matter
Yeah, this is what I was thinking
frankly, it's amazing to me that the mouse HSV challenge study didn't run a trial with petroleum jelly only
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After some further reading: doing that control would have been better science, but it seems the mouse sars-cov2 and influenza challenge studies' results indicate that might not be necessary except to rule out the role of petroleum jelly itself: