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Stępień-Pyśniak D, Dec M, Hauschild T, Kursa O, Marek A, Wilczyński J, Brzeski M. Case reports involving coinfection with Avibacterium paragallinarum and Ornithobacterium rhinotracheale in broiler chickens and Avibacterium endocarditis in broiler breeding hens in Poland. Avian Pathol 2024:1-12. [PMID: 38385975 DOI: 10.1080/03079457.2024.2323029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 02/20/2024] [Indexed: 02/23/2024]
Abstract
ABSTRACTThe study describes three clinical cases of infection with Avibacterium spp.. In case no. 1, respiratory clinical signs and high mortality (0.7-4.2% daily; total 21.2%) in Ross 308 broiler chickens were shown to be caused by coinfection with sequence type 9 of O. rhinotracheale presumptive serotype A and A. paragallinarum presumptive serotype B. The identical (pulsed-field gel electrophoresis) restriction pattern (pulsotype) of seven A. paragallinarum isolates indicated that infectious coryza in broilers was caused by the same clone. In cases 2 and 3, sudden increased deaths in Ross 308 broiler breeders (especially males) with lesions in the endocardium (valvular or mural endocarditis) were shown to be caused by A. endocarditis. Among nine antibiotics tested, florfenicol was the only antibiotic to which all A. paragallinarum and O. rhinotracheale isolates were susceptible. Out of the eight antibiotics tested, 11 A. endocarditis isolates from both clinical cases of infective endocarditis were susceptible to penicillin, amoxicillin, doxycycline and florfenicol. The A. endocarditis isolates tested in both clinical cases had different PFGE patterns (pulsotypes), but identical within a case. The causes of infectious coryza and infective endocarditis in the cases presented have not been determined. In the prevention of infectious diseases in large-scale livestock farming, it is very important to follow the rules of biosecurity.
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Affiliation(s)
- Dagmara Stępień-Pyśniak
- Department of Veterinary Prevention and Avian Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Marta Dec
- Department of Veterinary Prevention and Avian Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Tomasz Hauschild
- Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Białystok, Poland
| | - Olimpia Kursa
- Department of Poultry Diseases, National Veterinary Research Institute, Puławy, Poland
| | - Agnieszka Marek
- Department of Veterinary Prevention and Avian Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | | | - Michał Brzeski
- Veterinary Cabinet - Brzeski and Partners, Giżycko, Poland
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Buter R, Feberwee A, de Wit S, Heuvelink A, da Silva A, Gallardo R, Soriano Vargas E, Swanepoel S, Jung A, Tödte M, Dijkman R. Molecular characterization of the HMTp210 gene of Avibacterium paragallinarum and the proposition of a new genotyping method as alternative for classical serotyping. Avian Pathol 2023; 52:362-376. [PMID: 37470411 DOI: 10.1080/03079457.2023.2239178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023]
Abstract
Avibacterium paragallinarum (A. paragallinarum) is the aetiological agent of infectious coryza (IC) in chickens and characterized by acute respiratory distress and severe drop in egg production. Vaccination is important in the control of IC outbreaks and the efficacy of vaccination is dependent on A. paragallinarum serovars included in the vaccine. Classical serotyping of A. paragallinarum is laborious and hampered by poor availability of antigens and antisera. The haemagglutinin, important in classical serotyping, is encoded by the HMTp210 gene. HMTp210 gene analysis has been shown to have potential as alternative to classical serotyping. The aim of the present study was to further investigate the potential of sequence analyses of partial region 1 of the HMTp210 gene, the HMTp210 hypervariable region and the concatenated sequences of both fragments. For this analysis, 123 HMTp210 gene sequences (field isolates, A. paragallinarum serovar reference strains and vaccine strains) were included. Evaluation of serovar references and vaccine strains revealed a need for critical evaluation, especially within Page serovar B and C. Phylogenetic analysis of HMTp210 region 1 resulted in a separation of Page serovar A, B and C strains. Analysis of the HMTp210 HVR alone was not sufficient to discriminate all nine different Kume serovar references. The concatenated sequences of HMTp210 region 1 and HMTp210 HVR resulted in 14 clusters with a high correlation with Page serovar and with the nine currently known Kume serovars and is therefore proposed as a novel genotyping method that could be used as an alternative for classical serotyping of A. paragallinarum.
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Affiliation(s)
| | | | - Sjaak de Wit
- Royal GD, Deventer, the Netherlands
- Department of Population Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | | | - Ana da Silva
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Rodrigo Gallardo
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Edgardo Soriano Vargas
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, México
| | - Stefan Swanepoel
- Deltamune, Unit 34, Oxford Business Park, Centurion, South Africa
| | - Arne Jung
- Klinik für Geflügel, University of Veterinary Medicine, Hannover, Germany
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Huo C, Jiao L, Li G, Li D, Lin W, Sun Y, Sun H. HutZ is required for efficient heme utilization and contributes to the pathogenicity of Avibacterium paragallinarum. Microbiol Spectr 2023; 11:e0397922. [PMID: 37768079 PMCID: PMC10580934 DOI: 10.1128/spectrum.03979-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 08/03/2023] [Indexed: 09/29/2023] Open
Abstract
Avibacterium paragallinarum is the pathogen that causes infectious coryza, a highly contagious respiratory disease that brings a serious threat to chickens. Heme utilization systems play an important role in bacterial adversity adaptation and pathogenicity, and our previous report found the presence of heme utilization (HutZ) in Av. paragallinarum. However, little is known about the function of HutZ in Av. paragallinarum. In this study, the HutZ mutant strain of Av. paragallinarum was successfully developed and identified by PCR and western blot analysis. Mutation of HutZ significantly retards bacterial growth under reduced iron conditions, indicating the regulatory role of HutZ on growth and iron acquisition. Notably, the HutZ mutant strain had slower growth than the wild-type strain when heme was provided as the sole source of iron; thus, HutZ is crucial for heme utilization in Av. paragallinarum. Moreover, the HutZ mutant strain exhibited a markedly compromised tolerance to acid stress compared to the wild-type strain. Pathogenicity analysis showed that mutation of HutZ significantly weakened the ability of bacteria to invade and reproduce in host macrophage cells in vitro. Furthermore, the HutZ mutation could significantly decrease the bacterial virulence in chickens, which displayed lower morbidity and milder clinical symptoms. Hence, this is the first study to demonstrate in-depth the essential roles of HutZ on iron homeostasis and pathogenesis of Av. paragallinarum, which provides novel insight into advances of new prophylactic vaccines against this kind of bacteria.ImportanceHeme utilization (HutZ) protein has been characterized as an important heme-degrading enzyme that is critical for the cleavage of heme to biliverdin via verdoheme and can release iron to be used by bacteria. The interaction between HutZ and Av. paragallinarum is still unknown. Here, we unraveled the role of HutZ on the growth, iron acquisition, heme utilization, and resistance to acidic stress in Av. paragallinarum. We also uncovered the importance of HutZ for the success of Av. paragallinarum infection and provided new clues to the pathogenesis strategies of this organism. This work constitutes a relevant step toward an understanding of the role of HutZ protein as a master virulence factor. Therefore, this study is of great importance for understanding the mechanisms underlying Av. paragallinarum virulence and may contribute to therapeutic applications.
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Affiliation(s)
- Caiyun Huo
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Lijiao Jiao
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Guiping Li
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Donghai Li
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Wutong Lin
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yingjian Sun
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Huiling Sun
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Guo M, Liu D, Xu H, Zhang H, Jin Y, Tan H, Wu Y, Zhang X. The Protective Efficacy of an Inactivated Vaccine against Avibacterium paragallinarum Field Isolates. Vet Sci 2022; 9. [PMID: 36136674 DOI: 10.3390/vetsci9090458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/18/2022] [Accepted: 08/25/2022] [Indexed: 11/23/2022] Open
Abstract
Infectious coryza (IC) is an acute respiratory disease caused by Avibacterium paragallinarum (Av. paragallinarum). In recent years, there have been frequent outbreaks of IC in chickens vaccinated with an inactivated vaccine, causing huge losses to the poultry industry. In this study, the protective efficacy of the trivalent inactivated IC vaccine (PT Medion Farma Jaya) against the field isolates of three serovars of Av. paragallinarum was verified. After vaccination, the hemagglutination inhibition antibody titers in double-vaccinated groups (A2, B2, and C2) were higher than those in single-vaccinated groups (A1, B1, and C1). The highest antibody titer was 213.1 at 3 weeks after the booster vaccination in group A2. Consistent with the trend in hemagglutination inhibition antibody titers, the protective efficacy of double vaccination was better than that of single vaccination. The clinical symptoms and pathological changes were alleviated, or the bacterial shedding was significantly reduced with double vaccination after challenge with field isolates of three serovars (p < 0.05). In particular, the chickens with double vaccination showed no clinical symptoms, pathological changes, or bacterial shedding after challenge by the serovar C strain. There was no significant difference in body weight and egg production between the double-vaccinated groups and the negative control group (p > 0.05). Therefore, we recommend that the commercial IC vaccine should be double-vaccinated in clinical applications.
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Guo M, Chen X, Zhang H, Liu D, Wu Y, Zhang X. Isolation, Serovar Identification, and Antimicrobial Susceptibility of Avibacteriumparagallinarum from Chickens in China from 2019 to 2020. Vet Sci 2022; 9:vetsci9010027. [PMID: 35051111 PMCID: PMC8781767 DOI: 10.3390/vetsci9010027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/06/2022] [Accepted: 01/11/2022] [Indexed: 02/06/2023] Open
Abstract
Infectious coryza is an acute infectious respiratory disease in chickens that is caused by Avibacterium paragallinarum (A. paragallinarum). Infectious coryza has major economic effects due to decreased egg production in growing birds and slowed growth in broilers. In this study, we isolated and identified 40 strains of A. paragallinarum from chickens that showed typical clinical signs of coryza in part of China from 2019 to 2020. Using a hemagglutination-inhibition test, 11 isolates were identified as serovar A, 10 isolates were identified as serovar B, and 19 isolates were identified as serovar C. Antimicrobial sensitivity tests showed that high minimum inhibitory concentration (MIC) values were encountered for compounds sulfamethoxine sodium and oxytetracycline hydrochloride. Especially, of the 40 A. paragallinarum isolates, 30% had an MIC value of compound sulfamethoxine sodium of 64 μg/mL, 10% of 128 μg/mL, and 15% of 256 μg/mL. For oxytetracycline hydrochloride, 85% of isolates showed MIC values of 64 μg/mL or more. Excitingly, the MIC values of β-lactamase (amoxicillin, ampicillin, and ceftiofur) were low, with 77.5%, 70%, and 92.5% of isolates having an MIC value of ≤1 μg/mL, respectively. Our results may provide a reference for the treatment of infectious coryza.
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Affiliation(s)
- Mengjiao Guo
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (M.G.); (X.C.); (H.Z.); (D.L.); (Y.W.)
| | - Xiufang Chen
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (M.G.); (X.C.); (H.Z.); (D.L.); (Y.W.)
| | - Hao Zhang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (M.G.); (X.C.); (H.Z.); (D.L.); (Y.W.)
| | - Donghui Liu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (M.G.); (X.C.); (H.Z.); (D.L.); (Y.W.)
| | - Yantao Wu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (M.G.); (X.C.); (H.Z.); (D.L.); (Y.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University (JIRLAAPS), Yangzhou 225009, China
| | - Xiaorong Zhang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (M.G.); (X.C.); (H.Z.); (D.L.); (Y.W.)
- Correspondence: ; Fax: +86-514-8797-9386
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6
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Guo M, Liu D, Chen X, Wu Y, Zhang X. Pathogenicity and innate response to Avibacterium paragallinarum in chickens. Poult Sci 2021; 101:101523. [PMID: 34784516 PMCID: PMC8591499 DOI: 10.1016/j.psj.2021.101523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 11/18/2022] Open
Abstract
Infectious coryza (IC) is an acute infectious upper respiratory disease in chickens. Recently, the prevalence of IC has increased in China. In this study, to clarify the pathogenic mechanism and innate immune response of Avibacterium paragallinarum (A. paragallinarum), an infection experiment with A. paragallinarum was conducted. Our results showed that the whole course of IC was approximately 7 d. The clinical signs score was highest at 3 dpi and decreased from 5 dpi. A large amount of mucus and exudates was found in the infraorbital sinuses and nasal cavity. The A. paragallinarum contents in blood remained the highest, reaching 9.16 × 105 CFU/g at 5 dpi, which indicated that A. paragallinarum could rapidly invade the host, replicate in the blood and cause bacteremia. A. paragallinarum targets the upper respiratory tract. The infiltration of inflammatory cells, macrophages, and heterophilic granulocytes was only observed in the nasal cavity and infraorbital sinus. The Tlr4 and Nod1 pathways were activated and induced proinflammatory responses in chickens after infection with A. paragallinarum. The expression of Il1β and Il6 in the nasal cavity was significantly higher than that in the spleen, and it was consistent with the gross lesions and pathological changes. In particular, the expression of Il6 increased 229.07-fold at 1 dpi in the nasal cavity and increased 3.12-fold in the spleen. The high level of proinflammatory cytokines in the nasal cavity at an early stage of infection may be the main factor related to acute upper respiratory inflammation in chickens. These findings provide a reference for the occurrence and development of diseases mediated by A. paragallinarum.
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Affiliation(s)
- Mengjiao Guo
- Jiangsu Co-Innovation Center for Prevention of Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Donghui Liu
- Jiangsu Co-Innovation Center for Prevention of Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiufang Chen
- Jiangsu Co-Innovation Center for Prevention of Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Yantao Wu
- Jiangsu Co-Innovation Center for Prevention of Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University (JIRLAAPS), Yangzhou, Jiangsu, China
| | - Xiaorong Zhang
- Jiangsu Co-Innovation Center for Prevention of Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.
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Disease considerations in smallholder and backyard poultry flocks. Vet Rec 2020; 187:20-2. [PMID: 33638502 DOI: 10.1136/vr.m2775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This focus article has been prepared by Adrienne Mackintosh, veterinary investigation officer, David Welchman, veterinary lead of the APHA Avian Expert Group, and Anna Brzozowska, data analyst in the APHA's Surveillance Intelligence Unit.
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Gallardo RA, Da Silva AP, Egaña-Labrin S, Stoute S, Kern C, Zhou H, Cutler G, Corsiglia C. Infectious Coryza: Persistence, Genotyping, and Vaccine Testing. Avian Dis 2020; 64:157-165. [PMID: 32550616 DOI: 10.1637/0005-2086-64.2.157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/15/2020] [Indexed: 11/05/2022]
Abstract
The reemergence of infectious coryza (IC) caused by Avibacterium paragallinarum (AP) as an acute and occasionally chronic respiratory disease in domestic poultry has caused severe losses in several U.S. states. The disease is also associated with decreased egg production in layers and increased condemnations from air sac infections in broilers. A series of applied experiments were performed to elucidate the persistence of AP in infected broiler flocks, to genotype AP strains isolated from field cases, and to evaluate commercial and autogenous vaccine protection in commercial and specific-pathogen-free (SPF) chickens. Experimental evaluation of environmental persistence suggests that AP did not persist more than 12 hr in a hypothetically contaminated environment. Additionally, other detected potential pathogens such as Gallibacterium anatis and infectious bronchitis virus caused mild respiratory signs in the exposed birds. The HMTp210 and HagA genes of four IC field strains were sequenced and compared with published sequences of HMTp210 and HagA. The HMTp210 phylogeny showed a marginally imperfect clustering of the sequences in genogroups A, B, and C. Although not definitive, this phylogeny provided evidence that the four field strains aligned with previously characterized serovar C strains. Moreover, the base pair homology of the four strains was 100% identical to serovar C reference strains (H-18 and Modesto). HagA phylogeny was unclear, but interestingly, the IC field strains were 100% homologous to C-1 strains reported from Mexico and Ecuador. Finally, vaccine protection studies in commercial hens indicate that clinical signs are induced by a combination of IC and other concomitant pathogens infecting commercial birds. Additionally, vaccine protection experiments performed in SPF hens indicated that protection provided by the two commercial vaccines tested provided a reduction in clinical signs and bacterial shedding after two applications.
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Affiliation(s)
- R A Gallardo
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA 95616,
| | - A P Da Silva
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA 95616
| | - S Egaña-Labrin
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA 95616
| | - S Stoute
- California Animal Health and Food Safety Laboratory System, Turlock Branch, University of California, Davis, Turlock, CA 95380
| | - C Kern
- College of Agriculture, Department of Animal Sciences, University of California, Davis, Davis, CA 95616
| | - H Zhou
- College of Agriculture, Department of Animal Sciences, University of California, Davis, Davis, CA 95616
| | - G Cutler
- Cutler Veterinary Associates International, Moorpark, CA 93020
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Crispo M, Blackall P, Khan A, Shivaprasad HL, Clothier K, Sentíes-Cué CG, Cooper G, Blakey J, Pitesky M, Mountainspring G, Cutler G, Bickford A, Stoute S. Characterization of an Outbreak of Infectious Coryza ( Avibacterium paragallinarum) in Commercial Chickens in Central California. Avian Dis 2020; 63:486-494. [PMID: 31967433 DOI: 10.1637/19-00081.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/21/2019] [Indexed: 11/05/2022]
Abstract
In 2017, the Turlock branch of the California Animal Health & Food Safety laboratory system received a significant increase in infectious coryza (IC) necropsy cases, with a total of 54 submissions originating from commercial broilers (n = 40), commercial layers (n = 11), and backyard chickens (n = 3). Layer flocks positive for IC were distributed within the adjacent counties of Merced and Stanislaus, while broiler flocks were concentrated within Merced County. The backyard flocks were located in Alameda and Sacramento counties. The clinical and pathologic presentation was consistent with IC, although septicemic lesions were also noticed. Avibacterium paragallinarum was isolated and identified by PCR from the respiratory tract as well as from extrarespiratory sites. Polymicrobial infections involving other viral (infectious bronchitis virus, infectious bursal disease virus) and bacterial (Mycoplasma spp., Escherichia coli, Ornithobacterium rhinotracheale, Gallibacterium anatis biovar haemolytica) agents were commonly reported. Thirteen selected Av. paragallinarum isolates were successfully characterized as serovar C (Page scheme) and serovar C2 (Kume scheme). They shared a unique enterobacterial repetitive intergenic consensus (ERIC) PCR, differing from the four reference strains, and showed consistent high minimum inhibitory concentration values for tetracycline, suggesting a common origin from a single clone. Based on these results, high biosecurity standards and proper immunization of susceptible, multi-age flocks should always be implemented and adjusted as needed. The importance of backyard flocks should not be underestimated due to their unique epidemiologic role.
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Affiliation(s)
- Manuela Crispo
- California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380
| | - Patrick Blackall
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4072, Australia
| | - Aatif Khan
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4072, Australia
| | - H L Shivaprasad
- California Animal Health & Food Safety Laboratory System, Tulare Branch, University of California-Davis, Tulare, CA 93274
| | - Kristin Clothier
- California Animal Health & Food Safety Laboratory System, Davis Branch, University of California-Davis, Davis, CA 95616
| | - C Gabriel Sentíes-Cué
- California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380
| | - George Cooper
- California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380
| | - Julia Blakey
- California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380
| | - Maurice Pitesky
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, CA 95616
| | | | - Gregg Cutler
- Cutler Veterinary Associates International, P.O. Box 1042, Moorpark, CA 93020
| | - Arthur Bickford
- California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380
| | - Simone Stoute
- California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380,
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Xu Y, Cheng J, Huang X, Xu M, Feng J, Liu C, Zhang G. Characterization of emergent Avibacterium paragallinarum strains and the protection conferred by infectious coryza vaccines against them in China. Poult Sci 2020; 98:6463-6471. [PMID: 31801310 PMCID: PMC8913951 DOI: 10.3382/ps/pez531] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/02/2019] [Indexed: 01/25/2023] Open
Abstract
Infectious coryza (IC), an acute respiratory disease of chickens, is caused by Avibacterium paragallinarum. Here, the current epidemiological status of IC was investigated in China over 5 yr (2013 to 2018). A total of 28 Av. paragallinarum field isolates were identified by PCR tests and by sequence analysis of the hemagglutinin gene. The pathogenicities of 4 field isolates, the efficacy of 2 commercial inactivated oil-emulsion IC vaccines and vaccines containing different Av. paragallinarum isolates were also evaluated. The PCRs revealed a high rate (51.5%) of sample positivity for Av. paragallinarum during 2013 to 2018. Phylogenetic analysis showed that most field strains fell into the same cluster and had a farther genetic relationship with the early isolates from China. Pathogenicity testing revealed that the Chinese Av. paragallinarum isolates were able to induce the typical clinical signs of IC; hence, they were clearly pathogenic to chickens. Vaccine efficacy tests revealed that the 2 commercial inactivated oil-emulsion IC vaccines we tested had low protection rates against 2 selected Av. paragallinarum isolates after a single immunization, whereas the inactivated vaccine containing the Av. paragallinarum BJ26 isolate generated a relatively high protection rate against the field isolates compared with other three tested vaccines. The results indicate that IC is currently prevalent in China, and that commercial vaccines have not counteracted its presence in this country.
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Affiliation(s)
- Yang Xu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.,Diagnostic & Research Center of Livestock and Poultry Epidemic Diseases, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jinlong Cheng
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Xiuying Huang
- Beijing Huadu Yukou Poultry Co., Ltd., Beijing 101206, People's Republic of China
| | - Meiyu Xu
- Diagnostic & Research Center of Livestock and Poultry Epidemic Diseases, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jinling Feng
- Diagnostic & Research Center of Livestock and Poultry Epidemic Diseases, China Agricultural University, Beijing 100193, People's Republic of China
| | - Changqing Liu
- Beijing Huadu Yukou Poultry Co., Ltd., Beijing 101206, People's Republic of China
| | - Guozhong Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.,Diagnostic & Research Center of Livestock and Poultry Epidemic Diseases, China Agricultural University, Beijing 100193, People's Republic of China
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Feberwee A, Dijkman R, Buter R, Soriano-Vargas E, Morales-Erasto V, Heuvelink A, Fabri T, Bouwstra R, de Wit S. Identification and characterization of Dutch Avibacterium paragallinarum isolates and the implications for diagnostics. Avian Pathol 2019; 48:549-556. [PMID: 31280592 DOI: 10.1080/03079457.2019.1641178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
This study reports the results of diagnostic and molecular typing methods for 18 Avibacterium paragallinarum isolates obtained from outbreaks of infectious coryza in commercial layer flocks in the Netherlands. Isolation, biochemical identification, species-specific PCR tests and classical serotyping were performed. In addition, molecular typing by Enterobacterial Repetitive Intergenic Consensus-Based Polymerase Chain Reaction (ERIC-PCR) and sequence analysis of the partial HPG2 region of A. paragallinarum were applied and results of both techniques were compared. Moreover, the pathogenicity of an isolate of the most common genotype detected in the Netherlands was determined in an animal experiment. All 18 Avibacterium isolates were nicotinamide adenine dinucleotide-dependent. All isolates were detected by the species-specific conventional PCR while 33% of the isolates were missed by the species-specific real-time PCR. Sequence analysis showed a probe mismatch as a result of a single nucleotide polymorphism (G1516A). Modification of the probe of the real-time PCR was necessary to overcome false negative results. Molecular typing showed that sequence analysis of the partial HPG2 region was in concordance with ERIC-PCR results and indicated the presence of two major genotypes. Serotyping showed the presence of serovars A-1, A-2 and B-1. There was no correlation between genotyping results and serotyping results. Inoculation of an isolate of the most prevalent genotype, and belonging to serovar A-1, into brown layer hens demonstrated the pathogenicity of this isolate.
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Affiliation(s)
| | | | | | - Edgardo Soriano-Vargas
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México , Toluca , México
| | - Vladimir Morales-Erasto
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México , Toluca , México
| | | | - Teun Fabri
- GD Animal Health , Deventer , Netherlands
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Disease surveillance in England and Wales, May 2016. Vet Rec 2016; 178:552-5. [PMID: 27235494 DOI: 10.1136/vr.i2914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
▪ Current and emerging issues▪ Highlights from the scanning surveillance network▪ Update on international disease threats▪ Health issues in young gamebirdsThese are among matters discussed in the Animal and Plant Health Agency's (APHA's) May disease surveillance report.
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Abstract
Erysipelas diagnosed in turkeys, sheep and pigs. Parasitic gastroenteritis reported in cattle on several farms. Unusual presentation of Actinobacillus suis causing spinal abscesses in pigs on a breeder-finisher unit. First APHA diagnosis of oedema disease in pigs in East Anglia for many years. Infectious coryza confirmed in a hobby breeding flock. These are among matters discussed in the Animal and Plant Health Agency's (APHA's) disease surveillance report for November 2014.
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Bisgaard M, Nørskov-Lauritsen N, de Wit SJ, Hess C, Christensen H. Multilocus sequence phylogenetic analysis of Avibacterium. Microbiology (Reading) 2012; 158:993-1004. [DOI: 10.1099/mic.0.054429-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- M. Bisgaard
- Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, 4 Stigbøjlen, DK-1870 Frederiksberg C, Denmark
| | | | - S. J. de Wit
- GD, Postbus 9, 7400 AA Deventer, The Netherlands
| | - C. Hess
- Clinic for Avian, Reptile and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University for Veterinary Medicine Vienna (Vetmeduni Vienna), Veterinaerplatz 1, 1210 Vienna, Austria
| | - H. Christensen
- Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, 4 Stigbøjlen, DK-1870 Frederiksberg C, Denmark
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