Molecular evidence to suggest pigeon‐type Chlamydia psittaci in association with an equine foal loss

Martina Jelocnik; C Jenkins; B O'Rourke; J Barnwell; Adam Polkinghorne

doi:10.1111/tbed.12817

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Molecular evidence to suggest pigeon‐type Chlamydia psittaci in association with an equine foal loss

Journal article

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Molecular evidence to suggest pigeon‐type Chlamydia psittaci in association with an equine foal loss

Martina Jelocnik, C Jenkins, B O'Rourke, J Barnwell and Adam Polkinghorne

Transboundary and Emerging Diseases, Vol.65(3), pp.911-915

2018

DOI: https://doi.org/10.1111/tbed.12817

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Abstract

chlamydia psittaci

horse

MLST

pigeon

reproductive loss

Chlamydia psittaci is an important avian pathogen with spillover from infected wildand domesticated birds also posing a risk to human health. We recently reported acase of C. psittaci equine placentitis associated with further spillover to humans.Molecular typing of this case revealed it belonged to the 6BC clade of C. psittaci,aglobally distributed highly virulent set of strains, typically linked to infection spilloverfrom parrots. Equine chlamydiosis associated with C. psittaci infection has previouslybeen reported elsewhere in countries where parrots are not endemic, however, rais-ing questions over the identity of infecting C. psittaci strains and the potential infec-tion reservoirs. In this study, we describe the detection and molecularcharacterization of C. psittaci in a case of equine abortion in southern Queensland.Equine placenta and fresh liver and lung tissue from the necropsied foetus werepositive by C. psittaci-specific qPCR. Chlamydia psittaci-specific multilocus sequencetyping and ompA genotyping were used to further characterize the detected equinestrains and an additional strain obtained from a dove from a different geographicregion presenting with psittacosis. Molecular typing of this case revealed that theinfecting equine strains were closely related to the C0sittaci detected in dove, allbelonging to an evolutionary lineage of C. psittaci strains typically associated withinfections of pigeons globally. This finding suggests a broader diversity of C. psittacistrains may be detected in horses and in association with reproductive loss, high-lighting the need for an expansion of surveillance studies globally to understand theepidemiology of equine chlamydiosis and the associated zoonotic risk.

Details

Title: Molecular evidence to suggest pigeon‐type Chlamydia psittaci in association with an equine foal loss
Authors: Martina Jelocnik (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
C Jenkins (Author) - NSW Department of Primary Industries
B O'Rourke (Author) - NSW Department of Primary Industries
J Barnwell (Author) - Equine Veterinary Services
Adam Polkinghorne (Corresponding Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Transboundary and Emerging Diseases, Vol.65(3), pp.911-915
Publisher: Wiley-Blackwell Verlag GmbH
Date published: 2018
DOI: 10.1111/tbed.12817
ISSN: 1865-1674; 1865-1682
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99450904902621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Infectious Diseases; Veterinary Sciences

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