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Pathogenicity of low and highly virulent Chlamydia psittaci isolates for specific pathogen-free chickens

(2013) AVIAN DISEASES. 57(2). p.242-247
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Abstract
In commercially raised poultry, chlamydiosis mostly seems to occur on turkey or duck farms, sometimes associated with zoonotic transmission and disease (psittacosis) in humans. However, Chlamydia infections are apparently emerging in chickens, and information on the virulence of Chlamydia in chickens is limited. Up-to-date Chlamydia psittaci genotypes B and D are most frequently found in broilers. We examined the pathogenicity of the well-characterized C. psittaci genotype B (CP3) and D (92/1293) strains in experimentally (aerosol) infected specific-pathogen-free chickens. Both strains caused conjunctivitis, rhinitis, and dyspnea. Pharyngeal and cloacal C. psittaci excretion was observed in all infected animals, indicative for systemic dissemination as proven by immunofluorescence staining of frozen tissue sections. Histopathologic lesions were present in all infected chickens. However, differences in pathology were observed. Genotype D led to mortality and more severe clinical signs and lesions as compared to genotype B, which showed lower virulence.
Keywords
PCR, POULTRY, PATHOLOGY, ANTIBODIES, TURKEYS, INFECTIONS, STRAINS, AVIAN SEROVARS, ORNITHOSIS AGENT, CHLAMYDOPHILA-PSITTACI, pathology, broilers, poultry, Chlamydia psittaci, chickens

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Chicago
Yin, Lizi, Stefanie Lagae, Isabelle Kalmar, Nicole Borel, Andreas Pospischil, and Daisy Vanrompay. 2013. “Pathogenicity of Low and Highly Virulent Chlamydia Psittaci Isolates for Specific Pathogen-free Chickens.” Avian Diseases 57 (2): 242–247.
APA
Yin, L., Lagae, S., Kalmar, I., Borel, N., Pospischil, A., & Vanrompay, D. (2013). Pathogenicity of low and highly virulent Chlamydia psittaci isolates for specific pathogen-free chickens. AVIAN DISEASES, 57(2), 242–247.
Vancouver
1.
Yin L, Lagae S, Kalmar I, Borel N, Pospischil A, Vanrompay D. Pathogenicity of low and highly virulent Chlamydia psittaci isolates for specific pathogen-free chickens. AVIAN DISEASES. 2013;57(2):242–7.
MLA
Yin, Lizi, Stefanie Lagae, Isabelle Kalmar, et al. “Pathogenicity of Low and Highly Virulent Chlamydia Psittaci Isolates for Specific Pathogen-free Chickens.” AVIAN DISEASES 57.2 (2013): 242–247. Print.
@article{3231175,
  abstract     = {In commercially raised poultry, chlamydiosis mostly seems to occur on turkey or duck farms, sometimes associated with zoonotic transmission and disease (psittacosis) in humans. However, Chlamydia infections are apparently emerging in chickens, and information on the virulence of Chlamydia in chickens is limited. Up-to-date Chlamydia psittaci genotypes B and D are most frequently found in broilers. We examined the pathogenicity of the well-characterized C. psittaci genotype B (CP3) and D (92/1293) strains in experimentally (aerosol) infected specific-pathogen-free chickens. Both strains caused conjunctivitis, rhinitis, and dyspnea. Pharyngeal and cloacal C. psittaci excretion was observed in all infected animals, indicative for systemic dissemination as proven by immunofluorescence staining of frozen tissue sections. Histopathologic lesions were present in all infected chickens. However, differences in pathology were observed. Genotype D led to mortality and more severe clinical signs and lesions as compared to genotype B, which showed lower virulence.},
  author       = {Yin, Lizi and Lagae, Stefanie and Kalmar, Isabelle and Borel, Nicole and Pospischil, Andreas and Vanrompay, Daisy},
  issn         = {0005-2086},
  journal      = {AVIAN DISEASES},
  keywords     = {PCR,POULTRY,PATHOLOGY,ANTIBODIES,TURKEYS,INFECTIONS,STRAINS,AVIAN SEROVARS,ORNITHOSIS AGENT,CHLAMYDOPHILA-PSITTACI,pathology,broilers,poultry,Chlamydia psittaci,chickens},
  language     = {eng},
  number       = {2},
  pages        = {242--247},
  title        = {Pathogenicity of low and highly virulent Chlamydia psittaci isolates for specific pathogen-free chickens},
  url          = {http://dx.doi.org/10.1637/10439-102612-Reg.1},
  volume       = {57},
  year         = {2013},
}

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