Excerpt from the USDA Fact Sheet:
In the summer of 2011, farmers in Germany began observing an unusually high incidence of disease in cattle, characterized by fever, anorexia, and reduced milk yield of up to 50 percent. These clinical signs generally resolved without treatment within a few days. Reports of disease among cattle in Germany, and subsequently in the Netherlands, continued throughout the fall. By November 2011, farmers began reporting abortions and stillbirths associated with congenital malformations, mostly among sheep but also in goats and cattle.
In late 2011, the Friedrich-Loeffler-Institut (FLI) in Germany identifi ed a virus from the Bunyaviridae family, Orthobunyavirus genus in serum samples from infected animals. It was named “Schmallenberg” after the German town where the disease was first detected. It is not certain whether this disease is new or just newly discovered.
About the Disease
Schmallenberg virus has been identified from animals on more than 2,000 farms in Europe. Most of these have been sheep farms, but the virus has also been detected on cattle and goat farms. It is not known if wild ruminants are also susceptible.
Click here for information about Schmallenberg Virus Restrictions for Imported Bovine or other ruminant germplasm from the European Union or other countries.
Schmallenberg Case Definition and Disease Information - March 28, 2012
Schmallenberg Virus Guidance to Veterinary Diagnostic Laboratories - March 28, 2012