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Peer-reviewed veterinary case report

Exposure to influenza A H3N2 virus in dogs and cats in the US

By Gutman, Sarah N et al.·Published in Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·2019·College of Veterinary Medicine·View original on PubMed

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Original publication title: Serologic investigation of exposure to influenza A virus H3N2 infection in dogs and cats in the United States.

Species:
dog

Plain-English summary

A study found that a small number of dogs and cats in the United States tested positive for the canine influenza A virus (CIV) H3N2. Out of 519 pets tested, only 10 dogs (about 2%) and 6 cats (nearly 9%) showed signs of exposure to this virus. Most positive cases were found in Indiana and Illinois, but overall, the virus was not very common in these states. The researchers did not find any specific risk factors that linked to the positive results. If your pet shows symptoms like coughing or lethargy, it’s a good idea to consult your veterinarian for advice.

People also search for: dog coughing treatment · cat flu symptoms · canine influenza vaccine · why is my dog lethargic · cat respiratory infection signs

Abstract

We investigated, in a cross-sectional study, the prevalence of antibodies against canine influenza A virus (CIV) H3N2 in serum samples collected from dogs and cats using a commercial ELISA and a hemagglutination inhibition (HI) test. Samples were obtained from 519 cats and dogs from 13 states within the United States. Data were analyzed for potential risk factors with positive sera (vs. negative sera) by logistic regression. Odds ratios and their 95% confidence intervals (CIs) were calculated by exponentiation of the regression coefficients. Ten dogs (2.21%; 95% CI: 1.05-3.98%) and 6 cats (8.96%; 95% CI: 3.36-18.48%) tested seropositive for CIV H3N2 by HI. One feline sample (1.49%; 95% CI: 0.04-8.04%) and 16 canine samples (3.53%; 95% CI: 2.01-5.61%) tested seropositive by ELISA for influenza A virus. There were no apparent associations between seropositivity and putative risk factors. All positive animals were from Indiana or Illinois; however, CIV H3N2 seroprevalence was not common in Illinois and Indiana.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/30638140/