My daughter adopted a elderly fiv cat several years ago ( they said he was at least 5 but 3 years on his black fur has started to have white hairs) . She is planning on leaving the country for a year or 2 and although she looked for other options it looks like Alfie is coming to stay. We have 4 other cats ( we recently lost one ) . I understand that bites are the only risk of transmitting it. I am more concerned about his age and the fact he is needy and cries when he can’t find you. Any tips for needy cat that might need to be separated for introductions We have an 10 year old who sleeps a lot and 3 , 4 years olds who spend most of their free time killing mice voles ect.