My kitten became very lethargic about 3 days ago. She was eating and drinking but I wasnt sure if she ate today because I have another kitten who eats alot so it was hard to tell. I immediately took her to the vet and he gave her antibiotics. He isnt sure what is wrong but he thinks the antibiotic will work. I hope it does, she is a really wonderful cat. My question is this: the other cat was spayed a week ago and stayed overnight at the vet. She is fine but is it possible that she brought home a germ or something that made the other cat sick?