The best I can find thus far via google is that the AE virus can survive up to 4 wks in droppings (www.thepoultrysite.com/diseaseinfo/9/avian-encephalomyelitis-epidemic-tremors+%22avian+encephalomyelitis%22+environment&hl=en&ct=clnk&cd=12&gl=ca and repeated in several other sources).
It may...