Boas can get IBD and not pass away from it, however...they will be carriers..meaning any other boa or python exposed could get it if thats what it is... However, pythons generally die from it.
If IBD is a concern for you, seek a vet for proper diagnosis.
As far as husbandry..we would have to know what your set up is like..however its not likely this has anything to do w husbandry.
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