Im new here, but I am putting in my 2 cents. I have several ferrals hanging out in my neighborhood. which came up to me, and seemed to be very happy and very freindly, only later I found out both were sick and were not considered adoptable. They were both put down, and it saddened me. I am not a strong willed person with living things, and knowing they were put down broke my heart, but then i would think about the ones still out there, and wonder how many more are infected, then i worry about my own. They are inside cats, but I have a doggie door and they do go outside to an enclosed kennel. What are the risk of them getting it, what are the risk of many more getting it. I watched these two cats suffer, it was horrible. After seeing all I have, Im not so sure I would release it back outside. My fear would be infecting others, instead of controling the viscous cycle.