Python in your post you speak of a few differant things, mouth rot and what not are not signs of IBD, those I would consider signs of other things. Also depending on the speices of snake you have their are bacterias that can act the same in an infected animal, Ive spoken to some very knowledgable people who have had first hand experiance with it. Boas can carry it for life, it is not believed to be air born or transmitted through any other means then bodily fluid. The one person I spoke to had a boa with IBD he kept with a ball python for a long period of time and to date the ball is fine and the boa was proven to have IBD. "I believe many sick animals are incorrectly presumed to have IBD quite often" I totally agree with that and I am not sure if you were getting at this point as well, but many times even when a boa is taken to a vet and IBD is found IBD gets the blame for the death when in reality it was something else. but due to the fear factor of the desease IBD was found and no further research into the cause of death was done so it wrongfully gets the label. If your worried about it the best you can do is make sure your collection is clean of mites and that anything you ever bring in is quarintined and treated for mites upon arrival. I treat ever animal that comes in my home for mites whether need be or not. Its easier to go that route then to fight them once you got them and they are known to be a carrier of IBD. hope this helps Jason
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Jason & Danica
www.Dumerils.com