I think this study is important to point out as a point of concern. On the other hand - and I say this from a TB control perspective, where TB-contaminated raw milk is absolutely a vector, particularly for Mycobacterium bovis; I've treated such cases - we don't know if ingesting H5 is as risky for humans. It doesn't seem like a good idea, though, and there are plenty of other things spread by raw milk that definitely can make you ill (enteric bacteria in particular). I go through about three gallons of milk a week personally, but it's pasteurized and off-the-grocery-shelf.