Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 - Vol. 19 No. 11 - November 2013 - Emerging Infectious Disease journal - CDC
Volume 19, Number 11—November 2013
Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012
Pseudorabies virus (PRV; family Herpesviridae, subfamily Alphaherpesvirinae, genus Varicellovirus) contains a double-stranded DNA genome with strong genetic stability. The virus has a broad host range and can infect most mammals and some avian species (1). Pigs are the natural reservoir for PRV; infection in adult pigs is called Aujeszky disease. Swine farmers with PRV-infected pigs can incur substantial economic costs from reproductive losses in sows and from weight loss in infected adults (2). PRV is especially prominent in regions of South America, Asia, and Europe with dense swine populations. There have been no reports of PRV in Norway, Finland, or Malta, and the disease has been eradicated from domestic pig populations in Germany, Austria, Sweden, Denmark, the United Kingdom, Canada, New Zealand, and the United States (3).