She's back from her vacation now, but the kitty is still at the vet's, still running a fever. Turned out that he's also dealing with toxoplasmosis, which has obviously affected his brain. I know that toxoplasmosis usually doesn't affect cats at all, but obviously it does when the immune system is down. My friend thinks he has reached a point where he should be helped to the bridge, but obviously her vet hasn't given up hope yet (but she only spoke to the vet techs so far). She has an appointment at the vet's tomorrow to discuss further options. Poor little kitty!