Tags

Type your tag names separated by a space and hit enter

Characterization of an Outbreak of Infectious Coryza (Avibacterium paragallinarum) in Commercial Chickens in Central California.
Avian Dis 2019; 63(3):486-494AD

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.

Authors+Show Affiliations

California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380.Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4072, Australia.Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4072, Australia.California Animal Health & Food Safety Laboratory System, Tulare Branch, University of California-Davis, Tulare, CA 93274.California Animal Health & Food Safety Laboratory System, Davis Branch, University of California-Davis, Davis, CA 95616.California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380.California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380.California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380.Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, CA 95616.Foster Farms, Delhi, CA 95315.Cutler Veterinary Associates International, P.O. Box 1042, Moorpark, CA 93020.California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380.California Animal Health & Food Safety Laboratory System, Turlock Branch, University of California-Davis, Turlock, CA 95380, ststoute@ucdavis.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31967433

Citation

Crispo, Manuela, et al. "Characterization of an Outbreak of Infectious Coryza (Avibacterium Paragallinarum) in Commercial Chickens in Central California." Avian Diseases, vol. 63, no. 3, 2019, pp. 486-494.
Crispo M, Blackall P, Khan A, et al. Characterization of an Outbreak of Infectious Coryza (Avibacterium paragallinarum) in Commercial Chickens in Central California. Avian Dis. 2019;63(3):486-494.
Crispo, M., Blackall, P., Khan, A., Shivaprasad, H. L., Clothier, K., Sentíes-Cué, C. G., ... Stoute, S. (2019). Characterization of an Outbreak of Infectious Coryza (Avibacterium paragallinarum) in Commercial Chickens in Central California. Avian Diseases, 63(3), pp. 486-494. doi:10.1637/19-00081.1.
Crispo M, et al. Characterization of an Outbreak of Infectious Coryza (Avibacterium Paragallinarum) in Commercial Chickens in Central California. Avian Dis. 2019 Sep 1;63(3):486-494. PubMed PMID: 31967433.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of an Outbreak of Infectious Coryza (Avibacterium paragallinarum) in Commercial Chickens in Central California. AU - Crispo,Manuela, AU - Blackall,Patrick, AU - Khan,Aatif, AU - Shivaprasad,H L, AU - Clothier,Kristin, AU - Sentíes-Cué,C Gabriel, AU - Cooper,George, AU - Blakey,Julia, AU - Pitesky,Maurice, AU - Mountainspring,Grace, AU - Cutler,Gregg, AU - Bickford,Arthur, AU - Stoute,Simone, PY - 2019/03/06/received PY - 2019/05/21/accepted PY - 2020/1/23/entrez KW - Avibacterium paragallinarum KW - California KW - broilers KW - commercial KW - layers KW - outbreak KW - septicemia SP - 486 EP - 494 JF - Avian diseases JO - Avian Dis. VL - 63 IS - 3 N2 - 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. SN - 1938-4351 UR - https://www.unboundmedicine.com/medline/citation/31967433/Characterization_of_an_Outbreak_of_Infectious_Coryza_(Avibacterium_paragallinarum)_in_Commercial_Chickens_in_Central_California L2 - https://doi.org/10.1637/19-00081.1 DB - PRIME DP - Unbound Medicine ER -