Disease?

[Carlie]

Okay, I need some help with my babies. I received 3 new snakes at the end of January. Shortly after receiving them 2 our of the 3 began regurging. I have got one back on track, the other is lined up for a necropsy. Since then 3 from my personal collection have begun regurging, as well as 2 who started refusing food (one of them being the 3rd snake I acquired). All of the ones who have begun regurging have been moved to smaller bins, and moved from the ones not regurging. Tho at the same time I just made a new mouse order around the same time as the reguges/refusals started (all but one, but she was shedding around the time of the regurge). Is this all just a big coincidence, the mice or a disease?