Well, my Dad just got his third infusion of IVIG and continues to sing it's praises. It may not work for everyone but he is very happy to finally find a treatment that has him back to his 'new normal' and out of the hospital. He's getting a treatment every 3 weeks and he says he can really tell the difference, especially the first few days after the infusion. It seems like this would be a good treatment for someone with a supressed immune system that has trouble fighting off infections and keeps catching every bug that floats by. That was my Dad's issue. At one point he had bacterial, viral, and fungal all at once...it was crazy. Thanks again LisaMarie for the info!