oooo, now i'mout of my comfort zone - what is the difference between these two virii? Basically, my moggy was a very porly kitten when we got him 18mths ago. The vet said he had cat flu (sneezing, dodgy tum, diaroeha (sp) and sore eyes. He had the normal vacinations (including for cat flu) when he was well enough. How can I tell which virus he might have had andwhether he might still be infectious. I ask as my birman is hopefully preggers and i want to know whether to keep him separated from her (and the kits). He is due his jabs again really soon so will the vet be able to do a test to find out whether he could infect her? What would you suggest?