I dunno! I have alot of other CH babies/subadults and no one has ever gotten sick.
I was treating my het Pied male for the RI that he came with, but he's been over that for quite awhile. I was extremely careful about not cross-contaminating.
I'm going to be mixing up some Parv-O-Way to use on everyone for awhile. It is very effective on bacteria and viruses, and I usually spray it on my clothing and shoes if I'm quarantining rats or snakes.