There may be a vaccine to prevent FIP in the future. Researchers at Kansas State University, together with a medicinal chemist at Wichita University and Dr. Neils Pedersen at UC Davis, have been working on an FIP vaccine, and last week it was announced that they had licensed their compound GC376 to Anivive Lifesciences, which is a major step towards developing the compound into a commercial vaccine available to veterinarians.
Remember, though, that getting the compound to a pharmaceutical developer is just the first step. Clinical trials need to be run, and then the vaccine needs to be approved by the FDA before it will be available for sale. That will probably take a few years. But still…we may very well see a vaccine in our lifetimes that will prevent FIP in our feline companions!