> On May 10, 2018, at 4:38 AM, Gene Ash <[log in to unmask]> wrote:
>> there are any number of things which give the same symptoms as efb but are not.

I used to confuse EFB and PMS frequently. For me the thing that did the trick was looking at the color of the dying larvae. Larvae dying from EFB show different colors, like a weird greenish grey, whereas PMS/virus deaths are more white. Also, the visibility of the tracheal tubes in the larvae dying from EFB make them look like orange slices to me.

David Baker
To Bee or Not To Bee
Denver, CO USA
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