Hi, we had a litter of kittens that were approx 6-7 weeks ago, several weeks ago they were very active, playful, cute but within the last week they have all developed pus filled eyes, diarrhea, loss of appetite and become lethargic. I have heard of something called Feline Leukemia? Is it possible that they have this, we have another adult female that has had diarrhea but no other symptoms and last year we had a litter of kittens a few of them died within a couple of weeks of birth but then some of them seemed to develop symptoms but grew out of it. Would you have any idea what we could be dealing with and what can be done? Any help is greatly appreciated.