On May 16, 2018, the North Dakota Department of Agriculture reported one confirmed case of equine herpesvirus myeloencephalopathy (EHM, or neurologic herpesvirus) in a Stutsman County horse. The horse began showing clinical signs on May 11, 2018, and was euthanized the next day due to poor prognosis. 

Horses that were exposed within 72 hours prior to the onset of clinical illness are under quarantine. 

For more information about EHM go to https://aaep.org/sites/default/files/Documents/DiseaseFactsheetEHM.pdf