Prevalence of IBD?

[Skiploder]

How fascinating.

How do people acquire these other viruses that you've mentioned as being the culprits of various outbreaks? From outside animals (not quarantining), or do they also lay dormant in their animals until a specific time? I would think that a rapid mass die-off of animals would almost certainly indicate that they brought it in from elsewhere abruptly.

OPMV can lay dormant for a period of time, as can other viruses. Other ailments - some bacterial - can actually be subclinical for a period that exceeds whatever QT period you read about in most care sheets.

You have a collection of ball pythons, you go to an expo and pick up a new caramel sugar mega pied fudge and it is an asymptomatic carrier of OPMV. At some point, past the cookie cutter QT period, the snake becomes symptomatic for whatever reason and then begins shedding the virus. Boom your whole collection is now at risk.

Also, should the little boa test positive for IBD, then what should I do? It would be asymptomatic at this point.

I would. Some may agree....some may disagree. That is ultimately a decision that you have to make after careful examination and weighing of the risks.