There is at least one condition that self proclaimed experts have declared to be "the rottenest case of AFB I've ever seen." The samples on this tested negative. The condition was cleared up by requeening. The puzzler on this one was that the queen from the afflicted colony was in two cases put into another hive with different bees and the resulting colony built up normally from that point. There was no more "disease" in either the original sick colony or the old queens new domain. Tom Elliott Eagle River, Alaska