I will say a prayer for your best friend tonight. If I can be of any more help please feel free to ask. Below is the link to info on vaccinations. If he is suffering from IMT what will happen is his blood is losing its ability to carry oxygen to his body and specifically his organs. One plus I think is that Airedales are not predisposed to IMT.
http://www.dvmnews.com/dvm/issue/issueDetail.jsp?id=2377