Coping With Calicivirus

I foster and care for multiple cats and kittens. A month or so ago I had 3 litters of kittens who were all around 10-12 weeks old. They had all had their moments of runny eyes and a few were quite small. But everyone seemed to be doing fine at the time. I woke up one morning to find what had been one of the biggest kittens mouth breathing and with his nose completely cursted over and he was clearly dehydrated. He went to bed the night before otherwise healthy so I was very worried and he appeared to be dehydrated. Immediately I took him to the vet where his temperature was 107.0 They gave him fluids, started broad spectrum IV antibiotics and kept him on a cooling blanket. His temperature never came down below 106.0 and he started to develop neurologic symptoms and the vet and I determined that it was best he be euthanized. It was heartbreaking and I was immediately very concerned about all the kittens and cats in my house. We just got the necropsy report back to confirm that he died of calicivirus. I am still on watch for the other cats to get sick and am hoping for the best!