Dogs in Maricopa County sickened by H3N2

The news

Two cases of H3N2 have been reported by the Maricopa County Animal Care and Control (MCACC). The MCACC urges dog owners to familiarize themselves with the symptoms of the disease and to seek immediate veterinary care for dogs who exhibit symptoms.

IDEXX insight

H3N2 canine influenza virus was first detected in the United States in the Spring of 2015 when a severe respiratory outbreak occurred in the Chicago region. Since then, the virus has continued to spread across the United States causing local outbreaks.

This particular strain has demonstrated greater virulence, infectivity and prolonged shedding compared to the H3N8 canine influenza strain, and has also been reported in shelter cats. H3N8 canine influenza vaccines are not effective against H3N2, but new H3N2 vaccines are now available in the United States. Secondary bacterial pneumonia and co-infections can be seen with influenza.

Accurate diagnosis is critical in the prevention and management of canine influenza outbreaks. A Comprehensive Respiratory RealPCR™ panel on respiratory swabs taken early in the clinical course of infection is recommended for diagnosis of influenza and co-infections. Learn more about canine influenza so that you will be prepared in the event that the H3N2 outbreak reaches your patients.

Alexis Seguin, DVM, MS, DACVIM

posted by Alexis Seguin, DVM, MS, DACVIM

Dr. Seguin attended Cornell University as an undergraduate and then obtained her master’s degree and DVM at the University of Wisconsin–Madison in 1996 and 1998, respectively. She completed a rotating, small-animal medicine and surgery internship at North Carolina State University, followed by a 3-year residency in small-animal internal medicine at the University of Florida. She became board-certified by the American College of Veterinary Internal Medicine in 2002. She spent 2 years in private specialty practice, first in Mesa, Arizona, and then in Wisconsin. She joined IDEXX Laboratories as an Internal Medicine Consultant in 2004, and transitioned to the Medical Affairs team in 2015. Dr. Seguin lives in rural Wisconsin with her husband, two kids, three fish, a cardigan Welsh corgi, guinea pig, and two horses. She hopes to soon complete her family with the addition of a flock of chickens and guinea hens. Some of her favorite medical topics include infectious diseases, endocrinology, and immune-mediated diseases. Outside of work, she enjoys natural horsemanship, trail-riding, gardening, hiking/camping, and bird-watching.

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