I just got off the phone with a gentleman from USDA/NPIP and they have not heard about this problem yet and he said it happens....
He did say AE is not a reportable disease. He told me if anyone buys chicks they need to ask before they do so if the breeder flock is vaccinated for AE.
He also said it was a good idea to start a list as to what breeds were affected, as most of these birds all come from a central location and they are "drop shipped". Usually there is one huge hatchery that they sell chicks from, which includes all the hatcheries, not just the one mentioned earlier. That way if it is a particular place that this problem is coming from it can be addressed quicker.
So if your chicks are dying off like flies, get them to an avian lab to be diagnosed and let the hatchery know your results. I was also told if you shake the chick a little, if it has AE, it will have definate tremors.