I hope they are able to place the husky in a home where there is an owner who will have the time/determination to retrain him. He can be a wonderful pet in the appropriate home. Yes, all hospitals have to report dog bites to animal control. I have always dreaded the possibility that one of my dogs could bite someone, and worked hard to make sure they don't. Maple is somewhat Food agressive, but, I work with her at every meal to ensure she knows who is boss and that I and everyone in my family can touch/take her food bowl. She has learned to sit and wait patiently when we do. Of course, we put Woody's bowl far away from hers, or she won't let him eat. On the funny side though, she was so focused on stopping my friends lab, Jag, from stealing "her" biscuit one day, that Woody walked up behind her, and took it and ate it while she wasn't watching.
I hope your friends son will be OK, and not too traumatized by this incident. It can really change how he views dogs. I've been attacked/bitten twice. Once by a GSD who was going after the cat I was holding, and once unprovoked by a Chihuahua. Guess which type of dog I'm still afraid of? LOL Its not the GSD.