A new virus, the Moku virus, has been identified in Hawaii. It appears to be similar to Deformd Wing Virus and Isreali Acute Paralysis Virus and can also be transmitted by the varroa mite. Here are a few links. Unfortunately I haven't yet found a description of the symptoms associated with the virus. On the plus side it appears that the presence of the DWV virus controls the Moku virus. So far it has not been reported in the continental US.