Pseudorabies detected in hunting dogs in Alabama and Arkansas after close contact with feral swine (Sus scrofa)
2018
Kerri Pedersen | Clinton T. Turnage | Wesson D. Gaston | Paulo Arruda | Scott A. Alls | Thomas Gidlewski
Abstract Background Pigs (Sus scrofa) are the natural hosts of pseudorabies virus (PRV), also known as Aujeszky’s disease. Infection in mammals, with the exception of humans, typically causes extreme itching, facial swelling, and excessive salivation, followed by death in non-suid species. The risk to susceptible mammals was assumed to decrease when PRV was eliminated from U.S. commercial swine in 2004, though the virus remains endemic in feral swine. Infected feral swine pose a threat to the disease-free status of the commercial swine industry, and to other animals, including dogs, that come in direct or indirect contact with them. Since dogs are commonly used for hunting feral swine, they are at high risk of exposure. Case presentation The following report describes the progression of pseudorabies infection in dogs in two states after exposure to feral swine. The first case occurred in a dog in Alabama after participation in a competitive wild hog rodeo. The second case occurred in multiple dogs in Arkansas after hunting feral swine, and subsequent consumption of the offal. The antibody prevalence of feral swine in the two states where the dogs were exposed is also examined. Conclusions Dogs that are used for hunting feral swine are at high risk of exposure to pseudorabies because the disease is considered endemic in feral swine in the U.S.
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