Update
Okay, so Ron is being discharged today. He'll be recovering at his and Pansy's flat at 54. The Healers are still researching the unknown curse he was hit with, but they won't find anything--the curse is too ancient/dark, and much like poor Parvati they won't find a cure no matter how hard they work. Draco knows the antidote luckily, but that's staying between Pansy, Ron and Draco for now. Ron will be suffering random constant nerve attacks. Pain potions are not really effective. He's out of work until the full antidote can be brewed (3-4 weeks, 4 step process) and will basically be a right bastard for awhile. If anyone wants to visit him, let me know. He's confined to bed/couch for a few more days, after that he may try to go out or something but who knows what will happen. If there are questions, let me know. :)
ETA: I would assume the Prophet would have run a piece on this at some point Thursday or Friday, very basic stuff about an on-going investigation, no details being released, auror injured, and I'd also assume that through word of mouth people would have found out it was Ron. So, run with that as your characters wish.