<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The outbreak of chlamydiosis in one of the western provinces of Poland, was diagnosed accidentally as a concurrent infection in a commercial laying hen flock during an outbreak of fowl pox. For histological examination, skin and subcutaneous tissue samples from lesions on heads of the birds were collected. Swabs from throat and trachea have been examined by nested PCR, real-time PCR, and partial <italic>omp</italic>A sequencing. Detailed electron microscopy analysis revealed fowl pox intracytoplasmic inclusions, called <italic>Bollinger bodies</italic>, and the presence of other intracytoplasmic inclusions; specific for <italic>Chlamydia </italic>sp. Results of nested PCR confirmed the presence of <italic>Chlamydiaceae </italic>sp. in two tested samples. Surprisingly, one of the two <italic>Chlamydiaceae</italic>-positive cases turned out to be infected with a non-classified strain. Results of real-time PCR and sequencing confirmed the presence of a new <italic>Chlamydia </italic>species that has not been found in Poland to date. Partial sequencing and BLAST analysis of <italic>omp</italic>A gene sequence confirmed the highest homology to non-classified poultry strains of <italic>Chlamydia </italic>sp. that were previously detected in Germany and France. The zoonotic potential and the exact taxonomic status of this atypical strain have yet to be defined.</p></abstract>

The outbreak of chlamydiosis in one of the western provinces of Poland, was diagnosed accidentally as a concurrent infection in a commercial laying hen flock during an outbreak of fowl pox. For histological examination, skin and subcutaneous tissue samples from lesions on heads of the birds were collected. Swabs from throat and trachea have been examined by nested PCR, real-time PCR, and partial ompA sequencing. Detailed electron microscopy analysis revealed fowl pox intracytoplasmic inclusions, called Bollinger bodies, and the presence of other intracytoplasmic inclusions; specific for Chlamydia sp. Results of nested PCR confirmed the presence of Chlamydiaceae sp. in two tested samples. Surprisingly, one of the two Chlamydiaceae-positive cases turned out to be infected with a non-classified strain. Results of real-time PCR and sequencing confirmed the presence of a new Chlamydia species that has not been found in Poland to date. Partial sequencing and BLAST analysis of ompA gene sequence confirmed the highest homology to non-classified poultry strains of Chlamydia sp. that were previously detected in Germany and France. The zoonotic potential and the exact taxonomic status of this atypical strain have yet to be defined.

Detection of a new Non-Classified Chlamydia Species in Hens in Poland

Journal of Veterinary Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Detection of a new Non-Classified Chlamydia Species in Hens in Poland"}

The outbreak of chlamydiosis in one of the western provinces of Poland, was diagnosed accidentally as a concurrent infection in a commercial laying hen flock...

Detection of a new Non-Classified Chlamydia Species in Hens in Poland

Published Online: Mar 15, 2013

Page range: 25 - 28

DOI: https://doi.org/10.2478/bvip-2013-0005

Keywords
hens, new Chlamydia species, PCR, electron microscopy, Poland

© 2013

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Detection of a new Non-Classified Chlamydia Species in Hens in Poland

Published Online: Mar 15, 2013

Page range: 25 - 28

DOI: https://doi.org/10.2478/bvip-2013-0005

Keywordshens, new Chlamydia species, PCR, electron microscopy, Poland

© 2013

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
hens, new Chlamydia species, PCR, electron microscopy, Poland