I would have quarantined them from the hedgehog had I known they pass diseases. On my last post I asked if they did, but no one mentioned of one and I couldn’t find anything about it online. As for the guineas, I was quarantining them, but I then realized not only did they come from the same store, but they lived next to each other with only a smal panel separating them, and at the store the workers had me hold them both one after another exposing them to each other. Also since they’re from a pet store I have no idea what all the were exposed too. I discussed it in guinea pig cages forum and from the responses I decided that the quarantine wouldn’t really help anything. Again I wasn’t aware of them spreading things to hedgehogs at the time. They haven’t had any contact but I know thing can travel via air.
Sorry for the long reply