Help Tigger Recover from Severe Illness

I’m Sharon. My cat Tigger was bit by something. I took him to the vet. Wheatridge animal hospital. They treated him. It healed up. Three days later, he got real sick. His temperature should be between 100 to 101 degrees. It was 106.8. They kept him there for 4 days. Could not figure out why he was so sick. We had to transfer him to Colorado University veterinary in Ft. Collins, He was there for 6 days. They tried everything to figure out what was wrong. They think it’s connected to the bite. His temperature went from 107 down to 104 for 2 days. It finally went down to 102 degrees. We were able to bring him home. He is doing better. He almost died. I still have my baby, he’s like my child. I can’t lose him. He is still in treatment. Thank you in advance for all your support.