I saw the question the first time, but I don't know the answer, thus my lack of a response. I thought Baytril was a pill, not an injection. Are you sure he went downhill BECAUSE of the steroid injection, or maybe it was just an odd coincidence? Someone here should be able to tell you more about why he went downhill after the steroid injection IF you tell us WHAT the steroid injection was, like the brand name.
Is Alferon another brand name for Interferon-A, the human type that is diluted with saline for cats and then given orally? Phaewryn VT low cost Spay&Neuter, and Emergency Financial Assistance for cat owners: http://ucat.us/VermontLowCost.html Special Needs Cat Resources: http://ucat.us/domesticcatlinks.html