Report Question about vaccine shedding in PANS / PANDAS (Lyme included) Posted July 8, 2011 Question about vaccine shedding. Had a play date today with 2 brothers & 1 had gotten a varicella/chicken pox vaccine last week. I know it sheds. Anybody know how long shedding lasts & what threat it poses to PANDAS kids? Seems I remember reading that FluMist can shed for up to 30 days. EEK! Do all virus vaccines shed that long? It just came out in conversation with the mom or otherwise I'd not have known. We are probably in contact with vaccine shedding folks, but ignorance is bliss. Right now we're seeing some random effects of what we think are seasonal allergies. (They started at the same time we got a new "hypoallergenic" dog, but I don't think it's the dog since hubby's not reacting & he is allergic.). Otherwise things are still going pretty well, but I'll deny saying that if you ask me (already knocking on wood!). Guess I'll be watching for signs of exposure now tho'.