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In the United States

                                       
                                       Petersen and Barr. Vet Clin North Am Small Anim Pract 39(6): 1067-74 2009

Anderson et al published the first account of VL in American foxhounds in Oklahoma in 1980. It is thought that the disease was most likely introduced by acquiring hounds from hunts in Southern Europe. VL was more recently recognized in the US Foxhound in 1999, when one kennel of New York hounds was found to have significant numbers of hounds infected with canine VL. There are kennels across the US, including the Midwest, which currently harbor VL. In endemic areas all breeds of dogs are susceptible to VL. Within the US, due to the parasite’s ability to be transmitted from dam to pup, other breeds of dogs which originate from endemic areas, including Neapolitan Mastiffs, Corsicas and Italian Spinones, have also been found to be infected with the VL parasite.