Thanks to all of those that have replied to my questions so far about Calici Virus, I am new to Pets Forum and so apologies if I haven't got the hang of it yet!!! Yes, we have a definite diagnosis from a swab test taken by a vet and sent to a laboratory. Oscar, who has gingivitis, is full of beans, eating well and shows no other signs of the virus. We have 5 other feral cats we rescued too and the vet said to 'assume' they all have the virus or are immune. Our 6 cats include a mother and her litter of 3, Oscar who is the 'cuckoo' of the litter, and Phoebe who we believe is from Evi's previous litter. She is the only other cat that is showing any 'possible' signs of the virus - she has a weepy eye although it is not infected and the vet is not concerned. Many cattery web sites state they will not take cats that are 'infectious' and, ideally, we would prefer to use a cattery when we are away.