I looked up the antiviral actions for Tamiflu and they are pretty limited. It only works on influenza A and B and even then, now there are accusations that its studies were slanted to look good.

Here is the wiki link:
http://en.wikipedia.org/wiki/Oseltamivir

http://en.wikipedia.org/wiki/Neuraminidase_inhibitor

It gets pretty complex reading the viral links to neuraminidase inhibitor. I got lost.

I do think there are viral links to some PNs however.
We know that the Herpes viruses that infect humans do cause nerve pain. (simplex and zoster).
When I had a severe flu virus a few years ago, I burned all over for a couple of days. This may be the virus working, or the inflammatory cytokines that are released.
After reading the vaccine links to cytokine storms, I am tending to think it is those inflammatory cytokine molecules that inflame the nerves. Inflammatory cytokines come from Omega-6 fatty acid consumption that is too high in ratio and unbalanced from the Omega-3s. So doing flax oil and fish oil is a good way to keep them lower. It was this fatty acid intervention that brought me to the net a decade ago in fact!

My EFA thread:
http://neurotalk.psychcentral.com/showthread.php?t=6092