Novel orthoreovirus from mink, China, 2011.

We identified a novel mink orthoreovirus, MRV1HB-A, which seems to be closely related to human strain MRV2tou05, which was isolated from 2 children with acute necrotizing encephalopathy in 2005. Evolution of this virus should be closely monitored so that prevention and control measures can be taken should it become more virulent.