Sad the little guy couldn’t fight off the disease. There are a lot of “What if’s” here but nothing can reverse what happened. Hopefully the father, the doctors and the hospital will all learn something from this tragic death and will pass their findings on to hopefully, provide information to avoid another similar incident.
It is sad, but once he was symptomatic, the treatment was a million-to-one chance. It could have been a minor thing, but instead, the child is dead.