Equine Psittacosis and the Emergence of Chlamydia psittaci as an Equine Abortigenic Pathogen in Southeastern Australia: A Retrospective Data Analysis.
Abstract: is an important zoonotic pathogen. Although primarily a pathogen of birds, from which infection can spillover into humans and other mammalian hosts, the importance of as a cause of equine reproductive loss and the risk of infection to humans in contact with infected horses are increasingly being recognised in Australia and elsewhere. Despite the risks to both human and equine health, infection in horses is incompletely understood. This study aimed to update and summarise cases of equine psittacosis in Australia in the period 2018-2022, thus addressing a knowledge gap relating to recent cases in this country. These cases were identified from the examination of records held by state and federal veterinary authorities and from a review of published cases. A total of 31 cases were identified. Spatial and temporal trends were identified, with cases being more prevalent in winter and spring and geographically restricted to Victoria and New South Wales. The results show that cases of equine reproductive loss due to are consistent and ongoing and demonstrate the importance of routinely considering in diagnostic investigations. The need for ongoing study to better understand this important zoonotic pathogen is evident.
Publication Date: 2023-07-28 PubMed ID: 37570252PubMed Central: PMC10416985DOI: 10.3390/ani13152443Google Scholar: Lookup
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- Journal Article
- Clinical Pathology
- Disease control
- Disease Diagnosis
- Disease Etiology
- Disease Management
- Disease Outbreaks
- Disease Surveillance
- Disease Treatment
- Epidemiology
- Equine Diseases
- Equine Health
- Horses
- Infectious Disease
- Pathogens
- Public Health
- Retrospective Study
- Veterinary Medicine
- Veterinary Research
- Veterinary Science
- Zoonotic Diseases
Summary
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The article provides a detailed summary of cases involving a pathogen known as Chlamydia psittaci that affects horses and can lead to reproductive loss. The analysis focuses on recent incidents of equine psittacosis in Australia between 2018 and 2022, examining a number of cases and identifying trends related to seasonality and geography.
Understanding Chlamydia psittaci
- The article explains that Chlamydia psittaci is a pathogen typically found in birds, but it can also infect humans and other mammalian hosts.
- In Australia and other locations, Chlamydia psittaci has been increasingly recognized as a cause for reproductive loss in horses and poses a potential risk of infection to humans who come into contact with infected horses.
- However, this pathogen’s impact on horses is not yet wholly understood, thereby necessitating more comprehensive research.
Study Aim and Methodology
- The study aimed to fill existing knowledge gaps regarding recent equine psittacosis cases in Australia by summarizing and updating cases recorded between 2018 and 2022.
- The researchers identified these cases from state and federal veterinary authorities’ records and a review of already published cases.
Findings and Trends
- The study identified a total of 31 cases of equine psittacosis within the specified period.
- An analysis of these cases revealed spatial and temporal trends, with a higher prevalence in winter and spring, and cases predominantly reported in Victoria and New South Wales.
Implications and Recommendations
- The research highlights that incidents of equine reproductive loss because of Chlamydia psittaci are consistent and ongoing.
- The study emphasizes the importance of having veterinary professionals routinely consider Chlamydia psittaci during diagnostic investigations.
- Given the risks posed to both human and equine health, the study underscores the need for continuous research to better understand this important zoonotic pathogen.
Cite This Article
APA
El-Hage C, Legione A, Devlin J, Hughes K, Jenkins C, Gilkerson J.
(2023).
Equine Psittacosis and the Emergence of Chlamydia psittaci as an Equine Abortigenic Pathogen in Southeastern Australia: A Retrospective Data Analysis.
Animals (Basel), 13(15), 2443.
https://doi.org/10.3390/ani13152443 Publication
Researcher Affiliations
- Asia Pacific Centre for Animal Health, The Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia.
- Asia Pacific Centre for Animal Health, The Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia.
- Asia Pacific Centre for Animal Health, The Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia.
- School of Agricultural, Environmental and Veterinary Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW 2650, Australia.
- Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle, NSW 2568, Australia.
- Asia Pacific Centre for Animal Health, The Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia.
Conflict of Interest Statement
The authors declare no conflict of interest.
References
This article includes 29 references
- Akter R, Stent AW, Sansom FM, Gilkerson JR, Burden C, Devlin JM, Legione AR, El-Hage CM. Chlamydia psittaci: a suspected cause of reproductive loss in three Victorian horses.. Aust Vet J 2020 Nov;98(11):570-573.
- Anstey S, Lizárraga D, Nyari S, Chalmers G, Carrick J, Chicken C, Jenkins C, Perkins N, Timms P, Jelocnik M. Epidemiology of Chlamydia psittaci infections in pregnant Thoroughbred mares and foals.. Vet J 2021 Jul;273:105683.
- Chan J, Doyle B, Branley J, Sheppeard V, Gabor M, Viney K, Quinn H, Janover O, McCready M, Heller J. An outbreak of psittacosis at a veterinary school demonstrating a novel source of infection.. One Health 2017 Jun;3:29-33.
- Gough SL, Carrick J, Raidal SL, Keane S, Collins N, Cudmore L, Russell CM, Raidal S, Hughes KJ. Chlamydia psittaci infection as a cause of respiratory disease in neonatal foals.. Equine Vet J 2020 Mar;52(2):244-249.
- Jenkins C, Jelocnik M, Micallef ML, Galea F, Taylor-Brown A, Bogema DR, Liu M, O'Rourke B, Chicken C, Carrick J, Polkinghorne A. An epizootic of Chlamydia psittaci equine reproductive loss associated with suspected spillover from native Australian parrots.. Emerg Microbes Infect 2018 May 16;7(1):88.
- Borel N, Polkinghorne A, Pospischil A. A Review on Chlamydial Diseases in Animals: Still a Challenge for Pathologists?. Vet Pathol 2018 May;55(3):374-390.
- Knittler MR, Berndt A, Böcker S, Dutow P, Hänel F, Heuer D, Kägebein D, Klos A, Koch S, Liebler-Tenorio E, Ostermann C, Reinhold P, Saluz HP, Schöfl G, Sehnert P, Sachse K. Chlamydia psittaci: new insights into genomic diversity, clinical pathology, host-pathogen interaction and anti-bacterial immunity.. Int J Med Microbiol 2014 Oct;304(7):877-93.
- Radomski N, Einenkel R, Müller A, Knittler MR. Chlamydia-host cell interaction not only from a bird's eye view: some lessons from Chlamydia psittaci.. FEBS Lett 2016 Nov;590(21):3920-3940.
- Kaleta EF, Taday EM. Avian host range of Chlamydophila spp. based on isolation, antigen detection and serology.. Avian Pathol 2003 Oct;32(5):435-61.
- McGuigan CC, McIntyre PG, Templeton K. Psittacosis outbreak in Tayside, Scotland, December 2011 to February 2012.. Euro Surveill 2012 May 31;17(22).
- Gaede W, Reckling KF, Dresenkamp B, Kenklies S, Schubert E, Noack U, Irmscher HM, Ludwig C, Hotzel H, Sachse K. Chlamydophila psittaci infections in humans during an outbreak of psittacosis from poultry in Germany.. Zoonoses Public Health 2008 May;55(4):184-8.
- Laroucau K, de Barbeyrac B, Vorimore F, Clerc M, Bertin C, Harkinezhad T, Verminnen K, Obeniche F, Capek I, Bébéar C, Durand B, Zanella G, Vanrompay D, Garin-Bastuji B, Sachse K. Chlamydial infections in duck farms associated with human cases of psittacosis in France.. Vet Microbiol 2009 Mar 16;135(1-2):82-9.
- Balsamo G, Maxted AM, Midla JW, Murphy JM, Wohrle R, Edling TM, Fish PH, Flammer K, Hyde D, Kutty PK, Kobayashi M, Helm B, Oiulfstad B, Ritchie BW, Stobierski MG, Ehnert K, Tully TN Jr. Compendium of Measures to Control Chlamydia psittaci Infection Among Humans (Psittacosis) and Pet Birds (Avian Chlamydiosis), 2017.. J Avian Med Surg 2017 Sep;31(3):262-282.
- Stokes HS, Berg ML, Bennett ATD. A Review of Chlamydial Infections in Wild Birds.. Pathogens 2021 Jul 28;10(8).
- Polkinghorne A, Branley J. New insights into chlamydial zoonoses. Microbiol. Aust. 2020;41:14–18.
- Szeredi L, Hotzel H, Sachse K. High prevalence of chlamydial (Chlamydophila psittaci) infection in fetal membranes of aborted equine fetuses.. Vet Res Commun 2005 Mar;29 Suppl 1:37-49.
- Theegarten D, Sachse K, Mentrup B, Fey K, Hotzel H, Anhenn O. Chlamydophila spp. infection in horses with recurrent airway obstruction: similarities to human chronic obstructive disease.. Respir Res 2008 Jan 29;9(1):14.
- Mair TS, Wills JM. Chlamydia psittaci infection in horses: results of a prevalence survey and experimental challenge.. Vet Rec 1992 May 9;130(19):417-9.
- Akter R, Sansom FM, El-Hage CM, Gilkerson JR, Legione AR, Devlin JM. A 25-year retrospective study of Chlamydia psittaci in association with equine reproductive loss in Australia.. J Med Microbiol 2021 Feb;70(2).
- Anstey SI, Kasimov V, Jenkins C, Legione A, Devlin J, Amery-Gale J, Gilkerson J, Hair S, Perkins N, Peel AJ, Borel N, Pannekoek Y, Chaber AL, Woolford L, Timms P, Jelocnik M. Chlamydia Psittaci ST24: Clonal Strains of One Health Importance Dominate in Australian Horse, Bird and Human Infections.. Pathogens 2021 Aug 11;10(8).
- Anstey SI, Jenkins C, Jelocnik M. Suspected chlamydial foetal loss highlights the need for standardised on-farm protocols.. Aust Vet J 2022 Dec;100(12):600-604.
- White RT, Anstey SI, Kasimov V, Jenkins C, Devlin J, El-Hage C, Pannekoek Y, Legione AR, Jelocnik M. One clone to rule them all: Culture-independent genomics of Chlamydia psittaci from equine and avian hosts in Australia.. Microb Genom 2022 Oct;8(10).
- AgricultureVictoria . Notifiable Diseases. Department of Energy, Environment and Climate Action Victoria; Melbourne, VIC, Australia: 2023.
- Anstey S, Lizárraga D, Nyari S, Chalmers G, Carrick J, Chicken C, Jenkins C, Perkins N, Timms P, Jelocnik M. Epidemiology of Chlamydia psittaci infections in pregnant Thoroughbred mares and foals.. Vet J 2021 Jul;273:105683.
- Jelocnik M, Jenkins C, O'Rourke B, Barnwell J, Polkinghorne A. Molecular evidence to suggest pigeon-type Chlamydia psittaci in association with an equine foal loss.. Transbound Emerg Dis 2018 Jun;65(3):911-915.
- Nieuwenhuizen AA, Dijkstra F, Notermans DW, van der Hoek W. Laboratory methods for case finding in human psittacosis outbreaks: a systematic review.. BMC Infect Dis 2018 Aug 30;18(1):442.
- Jelocnik M, Branley J, Heller J, Raidal S, Alderson S, Galea F, Gabor M, Polkinghorne A. Multilocus sequence typing identifies an avian-like Chlamydia psittaci strain involved in equine placentitis and associated with subsequent human psittacosis.. Emerg Microbes Infect 2017 Feb 15;6(2):e7.
- Branley J, Bachmann NL, Jelocnik M, Myers GS, Polkinghorne A. Australian human and parrot Chlamydia psittaci strains cluster within the highly virulent 6BC clade of this important zoonotic pathogen.. Sci Rep 2016 Aug 4;6:30019.
- Fogarty R, Halpin K, Hyatt AD, Daszak P, Mungall BA. Henipavirus susceptibility to environmental variables.. Virus Res 2008 Mar;132(1-2):140-4.
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