Dr. Will Savage from Harvard University joins Dr. Chaffin to discuss Allergic Transfusion Reactions (ATRs). Allergic reactions have become pretty widely known as "nuisance reactions" to blood bankers and clinical staff, and it's easy to think that we understand them. Dr. Savage and colleagues have shown in numerous recent publications, however, that we don't yet fully "get it" with ATRs. He opens our eyes in this last BBGuy Essentials Episode of 2016. Thanks for listening this year (over 25,000 downloads!).