I forgot about that study, but did find it interesting. I Think the other reason we are hearing it more is due to the number of posters/cats on the forums, and as FIP is so hard to diagnose, and is so like other illnesses, it is mentioned by vets more - my cat wasn't the right category for it, and tests weren't conclusive, but she did have fluid in her belly - so she may not have had it, but meds given in case they were wrong didn't help. It was the first time my neighbour had come into contact with it, and she had done rescue work for 10 years, and mixed a lot of cats in that time - she dealt with it for the first time last year, and that was after over 30 years of cat ownership, including the years when she had large numbers due to rescue work.