Never had a bout with a brood disease but think so now...Tried to do a search here for answer..... well you know??? Probably operator error.
I have a hive I highly suspect EFB. A lot of equipment on this hive. Is the equipment a goner. Two deeps, two shallows, bottom and cover. Odd thing this was my strongest hive and a new requeen???
Back to the hive..... spotty pattern, yellowish milky larvae dead against side of cells, no putrid smell, no long roping of dead larvae.
I should have put this in disease section but needed a quick answer.....
You could try searching youtube. I've seen several videos on AFB and EFB. I'm sure that after watching a few, you could figure if EFB is present.
Good luck and hopefully it's something that can be treated.
Yea looked at some pics.... internet too slow for vids :(
...my memory fails me.., One is treatable and one is not. The one that has the long ropey larva is to be burned. Maybe others can chime in and give you some more advice on how to be sure what it is you actually have. I'm thinking it can be transmitted between hives via drifters and equipment. You may have to isolate and/or burn everything.
Does this help?
http://forum.beemaster.com/index.php?topic=11019.0 (http://forum.beemaster.com/index.php?topic=11019.0)
Good luck getting it figured out.
EFB does not have spores like AFB so you can reuse you equipment. With EFB the larva dies and turns yellow to brown before it is capped. It can be cured with terramycin. It is usually seen in hives in the spring I thought and the bees can usually fix it themselves when the flow kicks in if they have not been weaken to bad. University of Florida has some info on both EFB and AFB but if you can't do videos that won't help. If it's sacbrood I don't think there is chemical cure but a strong hive normally can overcome it. With Sacbrood and EFB the dead larva look a lot alike.
BTW most in the know suggest requeening for Sacbrood and efb which you have done. So the queen may be your problem.