I just heard from Sai Karthik's family. There is some good news at last. For the last 5 days, they have not needed to do any dialysis and his creatinine has stabilized at 1. They have also stopped plasmapheresis and are watching. They are still at Vellore and the plan is to watch for a few more days and then remove the PD catheter if he continues to show these good signs.
This is excellent news. Looks like the HUS is in remission.
Well, there are chances that the HUS may flare up again. But at least, they will be better prepared. Possibly start plasmapheresis immediately. This was really close.