The avian-origin H3N2 canine influenza virus that recently emerged in the United States has limited replication in swine.
Equine-origin H3N8 has circulated in dogs in the United States since 1999. A genetically and antigenically distinct avian-origin H3N2 canine influenza was detected in March of 2015 in Chicago, Illinois. Subsequent outbreaks were reported with over 1000 dogs in the Midwest affected followed by 23 additional states with detections within 5 months. The potential for canine-to-swine transmission was unknown. Experimental infection in pigs showed this virus does not replicate efficiently in swine.
Virus and Prion Research Unit, National Animal Disease Center, Agricultural Research Service, USDA, Ames, IA, USA.
Eugenio J
EJ
Abente
Virus and Prion Research Unit, National Animal Disease Center, Agricultural Research Service, USDA, Ames, IA, USA.
Tavis K
TK
Anderson
Virus and Prion Research Unit, National Animal Disease Center, Agricultural Research Service, USDA, Ames, IA, USA.
Daniela S
DS
Rajao
National Veterinary Services Laboratories, Animal and Plant Health Inspection Service, USDA, Ames, IA, USA.
Sabrina
S
Swenson
Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.
Phillip C
PC
Gauger
Virus and Prion Research Unit, National Animal Disease Center, Agricultural Research Service, USDA, Ames, IA, USA.
Amy L
AL
Vincent
D000818:Animals; D001717:Birds; D002641:Chicago / Q000453:epidemiology; D004196:Disease Outbreaks; D004283:Dog Diseases / Q000821:virology*; D004285:Dogs / Q000821:virology; D053122:Influenza A Virus, H3N2 Subtype / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology*; D053123:Influenza A Virus, H3N8 Subtype / Q000235:genetics / Q000302:isolation & purification; D005585:Influenza in Birds / Q000453:epidemiology / Q000821:virology*; D009976:Orthomyxoviridae Infections / Q000453:epidemiology / Q000635:transmission / Q000662:veterinary* / Q000821:virology; D010802:Phylogeny; D013552:Swine; D013553:Swine Diseases / Q000821:virology*; D014481:United States / Q000453:epidemiology; D014779:Virus Replication
Avian influenza; H3N2 virus; canine influenza