Researchers at USDA have published results of a successful test of a new vaccine against African swine fever virus. The new vaccine offered complete protection against the strain currently causing an epidemic in eastern Europe and Asia. Deletion of a newly discovered gene produced complete attenuation in the virulence of the virus. There are currently no vaccines available for African swine fever, so development of this strain into a commercial vaccine would be an important step in controlling the disease.
More information on African swine fever is available in the Merck Veterinary Manual.