The vets are feeling a bit confused over all this. Gabby had this for quite some time and now all of a sudden Sable has come down with it. The confusion is where did it start (cats are indoor only) and who/what is the host. We will all be working on solving this and hopefuly no others come down with it. Sable does seem to be handling it a bit better than Gabby. She at least has the desire to eat where Gabby didn't.