>>13481691BSL4 labs, which would have designer viruses, have like 0 tolerance for mistakes. I've only ever worked in a BSL3 though. You should read up on it, cause it's kinda cool.
Anyway, an infection from a BSL4 would have to be very organized, hidden, and intentional. I used work with virus specialists scientists, and nobody has got a yacht recently, so I don't think its a money scandal, lol. I just find it really hard to believe, but not impossible, that someone can be a retarded mastermind on this level.