I will pray for your son, that he completely heal. I had this once and it took me a long time to regain my energy levels. I took a pill called Kyolic Immune support. It had mushrooms in it and other things . . . I think garlic too. If he is home, you may want to get a diffuser and put colloidal silver in it and run it in his room. That really helped me when I was so sick with whatever that was that got many of us really ill. There is also a supplement that a friend bought me called Viracid that helped to regain my strength after that. Elderberry, black seed oil, pineapple juice, heating up manuka honey with cinnamon and lemon juice helps too. Praying he feels better soon.