I'm new to beekeeping, and am really enjoying it! I have four hives and actually harvested about thirty lbs of excess honey my first year. Exciting! But I have a problem. One of my hives (the weakest one) has been showing bizarre symptoms for some time. About 6 weeks ago, I started noticing a small number of brood being deposited outside of the hive. Sometimes one or two, up to five or six, every few days. The brood sometimes looked white, and sometimes brownish, at all different stages of development. I opened up the hive and found that most of the trays didn't have a good brood pattern, and most of the brood didn't look healthy. It wasn't shining white, but rather dull looking, sometimes brownish. I think I ruled out the symptoms of AFB--the brood wasn't at all stringy, didn't stink, and the cappings were not sunken, although some of them looked rather perforated. Based on comparisons to my disease symptoms in my books, I thought it was probably EFB. So I medicated with terramycin, (3 doses, spaced at 1 week intervals). I stopped seeing the brood outside the hive for a few weeks. But for the past week or two, I have noticed one or two dead brood outside the hive again, every few days! I haven't yet checked inside the hive. This seems strange to me. If I have EFB, shouldn't the antibiotic have taken care of it? Another beekeeper in my area said I should re-queen.