Seroprevalence and Risk Factors for Canine H3N8 Influenza Virus Exposure in Household Dogs in Colorado

Barrell, E.A.; Pecoraro, Heidi L.; Torres‐Henderson, C.; Morley, Paul S.; Lunn, Katharine F.; Landolt, Gabriele A.

doi:10.1111/j.1939-1676.2010.0616.x

Cited by 23 publications

(37 citation statements)

References 7 publications

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“…The positive results in dogs suggest that interspecies transmission of the equine influenza virus has occurred. Seroprevalence of the equine influenza virus was low, but similar to that in studies with pet dogs from other countries 10,25,26 where canine and equine influenza subtypes were used. The low seropositivity could be explained by the fact that we analyzed pet dogs, because prevalence of canine influenza in dogs held in canine control shelters has been reported to be up to 42%, and the only associated factor was the number of permanent days in the shelter.…”

Section: Discussionsupporting

confidence: 70%

Evidence of transmission and risk factors for influenza A virus in household dogs and their owners

Ramírez‐Martínez¹,

Contreras‐Luna²,

Luz³

et al. 2013

Influenza Resp Viruses

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BackgroundThe possible transmission of influenza A virus between dogs and humans is important, as in Mexico City there are approximately 1·2 million dogs. We present the first evidence of influenza A virus infection in household dogs in Mexico.ObjectivesThe objective of this study was to identify the presence of antibodies against influenza A virus in dogs and their owners, as well as the presence of RNA of influenza A virus in nasal exudates of dogs and, thereby, assess the possible transmission of the virus between humans and dogs.MethodsSerum samples from household dogs and their owners were analyzed to detect the presence of antibodies against three subtypes of human influenza virus (H1N1pdm09, H1N1, and H3N2), as well as subtype H3N8 of equine influenza. We analyzed dog nasal exudates to detect influenza viral RNA. The relationship between the seropositivity of dogs and various factors (age, sex, constantly at home, and seropositivity of owners) was statistically analyzed.ResultsSeroprevalence for human influenza in dogs was 0·9% (1 of 113), and it was 4% (5 of 113) for equine influenza. In humans, seroprevalence was 22% for subtype H1N1pdm09, 20% for subtype H1N1, and 11% for subtype H3N2. No significant association (P > 0·05) was found between seropositivity and any of the assessed factors. Furthermore, no viral RNA was detected in the nasal exudate samples.ConclusionsResults revealed seroprevalence of the influenza virus in household dogs in Mexico City. It can be assumed that dogs are currently becoming infected with different subtypes of influenza viruses.

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Section: Discussionsupporting

confidence: 70%

Evidence of transmission and risk factors for influenza A virus in household dogs and their owners

Ramírez‐Martínez¹,

Contreras‐Luna²,

Luz³

et al. 2013

Influenza Resp Viruses

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“…In accordance with procedures recommended by the World Organization for Animal Health (OIE) and from previous studies,3, 15 sera from blood samples were used to determine CIV H3N8 antibody titers by HI assay. Briefly, 1 volume of serum was incubated at 37°C for 20 hours with 3 volumes of Vibrio cholera receptor destroying enzyme 1.…”

Section: Methodsmentioning

confidence: 99%

Epidemiology and Ecology of H3N8 Canine Influenza Viruses in US Shelter Dogs

Pecoraro

Bennett

Huyvaert

et al. 2014

Veterinary Internal Medicne

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BackgroundH3N8 canine influenza virus (CIV) infection might contribute to increased duration of shelter stay for dogs. Greater understanding of factors contributing to CIV within shelters could help veterinarians identify control measures for CIV.ObjectivesTo assess community to shelter dog CIV transmission, estimate true prevalence of CIV, and determine risk factors associated with CIV in humane shelters.Animals5,160 dogs upon intake or discharge from 6 US humane shelters, December 2009 through January 2012.MethodsA cross‐sectional study was performed with prospective convenience sampling of 40 dogs from each shelter monthly. Nasal swabs and serum samples were collected. Hemagglutination inhibition and real‐time reverse transcriptase‐polymerase chain reaction assays were performed for each nasal and serum sample. True prevalence was estimated by stochastic latent class analysis. Logistic regression was used to identify risk factors associated with CIV shedding and seropositivity.ResultsNasal swabs were positive from 4.4% of New York (NY), 4.7% of Colorado (CO), 3.2% of South Carolina, 1.2% of Florida, and 0% of California and Texas shelter dogs sampled. Seropositivity was the highest in the CO shelter dogs at 10%, and NY at 8.5%. Other shelters had 0% seropositivity. Information‐theoretic analyses suggested that CIV shedding was associated with region, month, and year (model weight = 0.95) and comingling/cohousing (model weight = 0.92).Conclusions and Clinical ImportanceCommunity dogs are a likely source of CIV introduction into humane shelters and once CIV has become established, dog‐to‐dog transmission maintains the virus within a shelter.

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“…The Veterinary Journal j o u r n a l h o m e p a g e : w w w. e l s e v i e r. c o m / l o c a t e / t v j l To date, the virus is endemic in many states of the USA (Payungporn et al, 2008;Barrell et al, 2010;Hayward et al, 2010;Holt et al, 2010;Seiler et al, 2010;Serra et al, 2011), but so far there are no endemic areas outside the USA (Kruth et al, 2008;Knesl et al, 2009;De Benedictis et al, 2010;Piccirillo et al, 2010).…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Detection of respiratory viruses and Bordetella bronchiseptica in dogs with acute respiratory tract infections

Schulz

Kurz

Weber

et al. 2014

The Veterinary Journal

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Canine infectious respiratory disease (CIRD) is an acute, highly contagious disease complex caused by a variety of infectious agents. At present, the role of viral and bacterial components as primary or secondary pathogens in CIRD is not fully understood. The aim of this study was to investigate the prevalence of canine parainfluenza virus (CPIV), canine adenovirus type 2 (CAV-2), canine influenza virus (CIV), canine respiratory coronavirus (CRCoV), canine herpes virus-1 (CHV-1), canine distemper virus (CDV) and Bordetella bronchiseptica in dogs with CIRD and to compare the data with findings in healthy dogs. Sixty-one dogs with CIRD and 90 clinically healthy dogs from Southern Germany were prospectively enrolled in this study. Nasal and pharyngeal swabs were collected from all dogs and were analysed for CPIV, CAV-2, CIV, CRCoV, CHV-1, CDV, and B. bronchiseptica by real-time PCR. In dogs with acute respiratory signs, 37.7% tested positive for CPIV, 9.8% for CRCoV and 78.7% for B. bronchiseptica. Co-infections with more than one agent were detected in 47.9% of B. bronchiseptica-positive, 82.6% of CPIV-positive, and 100% of CRCoV-positive dogs. In clinically healthy dogs, 1.1% tested positive for CAV-2, 7.8% for CPIV and 45.6% for B. bronchiseptica. CPIV and B. bronchiseptica were detected significantly more often in dogs with CIRD than in clinically healthy dogs (P < 0.001 for each pathogen) and were the most common infectious agents in dogs with CIRD in Southern Germany. Mixed infections with several pathogens were common. In conclusion, clinically healthy dogs can carry respiratory pathogens and could act as sources of infection for susceptible dogs.

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Seroprevalence and Risk Factors for Canine H3N8 Influenza Virus Exposure in Household Dogs in Colorado

Cited by 23 publications

References 7 publications

Evidence of transmission and risk factors for influenza A virus in household dogs and their owners

Evidence of transmission and risk factors for influenza A virus in household dogs and their owners

Epidemiology and Ecology of H3N8 Canine Influenza Viruses in US Shelter Dogs

Detection of respiratory viruses and Bordetella bronchiseptica in dogs with acute respiratory tract infections

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