Sick mice colony, worried about snakes

[hungba]

I had recently made a post about my mice breeding colonies slowly dying off from unexplained reasons. I had made a post about it on the breeding mice section.

The mice continued to die, one or two dying a day. It only affected two of the cages the others had no deaths.

For the most part, the mice were suddenly found dead, and I did not see then get sick or anything like that and deteriorate, I would just find dead mice. So I decided to clean and disinfect all the cages and change substrates, food water, etc. to get rid of whatever was going on in there, complete clean and disinfect, for all the mice tubs and tools. After doing that yesterday, today I checked and no one died, but there was one mouse that was all messed up, it had its head sideways and was turning around in circles!

Now, during the time when this started happening (and it happened really fast over the last week or so), some snakes had eaten mice from this stock. At that time, only one baby mouse died, and I didn't think much of it. It happens sometimes. But during that feeding, I gave 3 snakes mice, not sure if it was from those cages or not. I am a little worried.

I also kept the mice in the same room as the snakes for weeks.

I looked up "mice, head sideways" on google and I found that one cause could be Chronic Murine Pneumonia caused by Mycoplasma pulmonis infection in the mice. I don't know if this is the reason because I did not see the other mice before they died and also do not notice the other symptoms "sniffling, sneezing, squinting, red-brown tears, rough haircoat, and labored and audible respiration" in the mice.

I looked up various snake forums and it seems as most snake keepers say that mycoplasma pulmonis is exist in all mice and rats anyway in their respiratory systems, that when they are stressed, this bacteria then infects them by overload, and that snakes do not get sick from eating it. This seems to make sense as I switched the mice from a smaller box to a larger box to try to stop the mother eating babies (stress from enviroment change). In fact, pretty much all responses say that they feed the infected mice to their snakes anyways. From my understanding that this bacteria can be carried in mice and rats without showing symptoms anyway, so if you buy feeder mice and feed them they may actually have it even with no symptoms (i.e., you cannot know), but that reptiles are not affected by it.

I only feed the mice to those three snakes because they are live mouse eaters only. The rest are on F/T rats.

The snakes do not show any abnormality or symptoms of problems at all.

Does anyone know about this or can help me? Are my snakes going to be alright? (Note, I do not know that it is mycoplasma pulmonis or Chronic Murine Pneumonia, it is just the only thing I found that causes mice to have their heads go sideways.)