Infection of eight mesocarnivores in New Hampshire andVermont with a distinct clade of canine distemper virus in2016–2017

摘要

Three fishers ( ), 2 gray foxes( ), 1 mink( ), 1 skunk ( ), and 1 raccoon ( ), from Vermont and New Hampshire, had lesions onautopsy consistent with canine distemper virus (CDV) infectionsdiagnosed in a 12-mo period in 2016–2017. Lesions of CDV infectionwere most commonly noted in the lungs (8 of 8 animals), urothelium (5of 8), biliary tract (5 of 8), gastrointestinal tract (4 of 7), andbrain (4 of 6). Splenic lesions were seen in 3 animals. The diagnosiswas confirmed via immunohistochemistry and virus isolation. Viralgenotyping indicated that all 8 animals were infected with a distinctclade of CDV that has only been reported in wildlife in New England,and this clade of viruses is distinct from vaccine strains. During the12 mo when these cases occurred, no other CDV clade was identified inany other wildlife or domesticated animal submitted from the 2states.