Content continues after advertisement

Research Note: Flu Season for Horses, Dogs, & Cats

Clinician's Brief (Capsule)

Infectious Disease

|
February 2015

Sign in to Print/View PDF

Equine influenza A(H3N8) virus (EIV), a major respiratory pathogen in horses, has proven capable of infecting dogs. Arising first in racing greyhounds in the United States before 2004, it has since established itself and spread to pet dogs. This study investigated whether cats can harbor and spread EIV as well. Specific pathogen-free cats aged 9–12 weeks were studied. Cats were inoculated intranasally with an equine influenza A(H3N8) isolate. The next day, a cohort group of uninfected cats was introduced into the same cages with the infected cats. Additional uninfected cats were housed as controls in a separate room. Nasal swabs were collected daily on all cats for virus isolation. EIV titers were measured in serum for 2 weeks. Two cats from each group were euthanized, tracheal and lung sections were examined, and EIV-specific immunocytochemistry was performed. Results showed that cats were susceptible to EIV infection, with inoculated and cohort cats showing clinical signs, positive titers, virus shedding, and characteristic histologic changes in the trachea and lung. Clinical signs were milder in the cohort group and lagged behind those of the inoculated group. The authors conclude that horizontal transmission of A(H3N8) in cats is possible, and that EIV could establish itself and circulate among pet cats.

References

For global readers, a calculator to convert laboratory values, dosages, and other measurements to SI units can be found here.

All Clinician's Brief content is reviewed for accuracy at the time of publication. Previously published content may not reflect recent developments in research and practice.

Material from Clinician's Brief may not be reproduced, distributed, or used in whole or in part without prior permission of Educational Concepts, LLC. For questions or inquiries please contact us.

Podcasts

Clinician's Brief:
The Podcast
Listen as host Alyssa Watson, DVM, talks with the authors of your favorite Clinician’s Brief articles. Dig deeper and explore the conversations behind the content here.
Clinician's Brief provides relevant diagnostic and treatment information for small animal practitioners. It has been ranked the #1 most essential publication by small animal veterinarians for 9 years.*

*2007-2017 PERQ and Essential Media Studies

© 2022 Educational Concepts, L.L.C. dba Brief Media ™ All Rights Reserved. Terms & Conditions | DMCA Copyright | Privacy Policy | Acceptable Use Policy