@levelup an UPDATE: I got a round of vaccines last August/September consisting of Flu, RSV, and Pneumonia. I did some digging and apparently the RSV vaccine is thought to give PN symptoms after a certain number of days, I believe it was around 36-42, but not sure exactly. This would coincide with when I started experiencing PN. Going to talk to my provider more about it, but if anyone else has had vaccines and then sometime later, can be months, developed PN, then this could be of some help to you.