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Severe Conjunctivitis Associated with Chlamydia Felis Infection in a Free-Ranging Eurasian Lynx (Lynx Lynx)

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Severe Conjunctivitis Associated with Chlamydia Felis Infection in a Free-Ranging Eurasian Lynx (Lynx Lynx) Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2019 Severe conjunctivitis associated with chlamydia felis infection in a free-ranging Eurasian Lynx (Lynx lynx) Marti, Iris ; Pisano, Simone R R ; Wehrle, Martin ; Meli, Marina L ; Hofmann-Lehmann, Regina ; Ryser-Degiorgis, Marie-Pierre Abstract: A free-ranging adult Eurasian lynx (Lynx lynx) captured in Switzerland presented with a severe purulent unilateral conjunctivitis. Chlamydia felis was detected in conjunctival swabs by qPCR. Systemic treatment with oxytetracycline and ketoprofen led to complete recovery. Infection with C. felis has not been previously reported in Eurasian lynx. DOI: https://doi.org/10.7589/2018-05-142 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-158198 Journal Article Published Version Originally published at: Marti, Iris; Pisano, Simone R R; Wehrle, Martin; Meli, Marina L; Hofmann-Lehmann, Regina; Ryser- Degiorgis, Marie-Pierre (2019). Severe conjunctivitis associated with chlamydia felis infection in a free- ranging Eurasian Lynx (Lynx lynx). Journal of Wildlife Diseases, 55(2):522. DOI: https://doi.org/10.7589/2018-05-142 LETTERS DOI: 10.7589/2018-05-142 Journal of Wildlife Diseases, 55(2), 2019, pp. 000–000 Ó Wildlife Disease Association 2019 Severe Conjunctivitis Associated with Chlamydia felis Infection in a Free-ranging Eurasian Lynx (Lynx lynx) Iris Marti,1,4 Simone R. R. Pisano,1 Martin Wehrle,2 Marina L. Meli,3 Regina Hofmann-Lehmann,3 and Marie- Pierre Ryser-Degiorgis1 1Centre for Fish and Wildlife Health, Vetsuisse Faculty, University of Bern, Langgassstr.¨ 122, CH-3001 Bern, Switzerland; 2Natur- und Tierpark Goldau, Parkstr. 26, Postfach 161, 6410 Goldau, Switzerland; 3Clinical Laboratory and Center for Clinical Studies, Vetsuisse Faculty, University of Zurich, Winterthurerstr. 260, CH- 8057 Zurich,¨ Switzerland; 4Corresponding author (email: [email protected]) ABSTRACT: A free-ranging adult Eurasian lynx Here we report a case of conjunctivitis (Lynx lynx) captured in Switzerland presented associated with C. felis infection in a free- with a severe purulent unilateral conjunctivitis. ranging Eurasian lynx (Lynx lynx). Chlamydia felis was detected in conjunctival swabs by qPCR. Systemic treatment with oxytet- In March 2017, an adult female Eurasian racycline and ketoprofen led to complete recov- lynx was caught for a translocation program in ery. Infection with C. felis has not been previously the Jura Mountains, Switzerland, using a box reported in Eurasian lynx. trap and an intramuscular injection of 0.17 mg/kg medetomidine (Domitor, 1 mg/mL, Chlamydia felis is an obligate intracellular Orion-Corporation, Espoo, Finland) and 4.9 bacterium and is the organism most-frequent- mg/kg ketamine hydrochloride (Ketasol, 100 ly associated with infectious conjunctivitis in mg/mL, Graeub AG, Bern, Switzerland). The domestic cats (Felis silvestris catus;Deanet animal presented with a marked unilateral al. 2005; Gruffydd-Jones et al. 2009). After 2– conjunctivitis of the left eye characterized by 5 d incubation, clinical signs typically include hyperemia, prominent chemosis, and yellow- a marked hyperemia of the nictitating mem- ish, turbid, mucopurulent discharge (Fig. 1). brane, prominent chemosis, blepharospasm, There was no visible injury of the ocular and ocular discharge (Gruffydd-Jones et al. structures, and the fluorescein stain test was 2009; Berris et al. 2015). They often start negative, but two, crust-covered scratches on unilaterally but become bilateral after a few the nose suggested a recent facial trauma. The days. Chlamydiosis in cats can additionally be right eye appeared healthy. The lynx was in associated with fever, infection of the upper good body condition (16.2 kg) and had a shiny respiratory tract, pneumonia, and reproduc- clean hair coat and a full stomach. Body tive disorders (Gruffydd-Jones et al. 2009). temperature (38.7 C), lung, and heart auscul- In wild felids, antibodies against Chlamydia tation were unremarkable. We suspected a spp. have been documented in free-ranging bacterial conjunctivitis of traumatic origin. Iberian lynx (Lynx pardinus), European According to our translocation protocol, we wildcats (Felis silvestris silvestris), and captive collected blood as well as conjunctival, tigers (Panthera tigris; Milla´n and Rodrıguez´ oropharyngeal, and rectal dry swabs. We 2009; Milla´n et al. 2009; Berris et al. 2015) but rinsed the diseased eye with sterile NaCl not in mountain lions (Puma concolor) and solution and administered 8 mg/kg cefovecin Pallas cats (Felis manul; Paul-Murphy et al. (Conveniat, 80 mg/mL, Zoetis, Zurich, Swit- 1994; Naidenko et al. 2014). Chlamydia felis zerland) subcutaneously. Medetomidine was was detected by PCR in a free-ranging Iberian antagonized with 0.86 mg/kg atipamezol lynx and a captive ocelot (Leopardus pardalis; (Antisedan, 5 mg/mL, Orion-Corporation, Meli et al. 2009; Seki et al. 2016) without Espoo, Finland) and the lynx was brought to mention of any associated clinical signs. The a quarantine enclosure. avian immunotype of C. psittaci was found in Conjunctival swabs were positive for C. felis the altered organs of a captive fishing cat by qPCR (cycle threshold [Ct] values of 27 in (Prionailurus viverrinus) that died after show- the affected versus 39 in the apparently ing depression and tremor (Kik et al. 1997). healthy eye, or almost 4,000 times more 1 2 JOURNAL OF WILDLIFE DISEASES, VOL. 55, NO. 2, APRIL 2019 FIGURE 1. Left eye of an adult female Eurasian lynx (Lynx lynx) at the time of capture in March 2017 in the Swiss Jura Mountains. The lynx presented with a severe conjunctivitis characterized by hyperemia and prominent chemosis together with yellowish, turbid, mucopurulent ocular discharge. bacterial DNA in the affected eye than in the mg/mL, MSD Animal Health, Luzern, Swit- unaffected eye) while PCRs for feline herpes- zerland) mixed with 1.8 mg/kg ketoprofen virus-1 (FHV-1) and Mycoplasma felis were (Dinalgent, 150 mg/mL, Graeub AG, Bern, negative (Meli et al. 2009; Soderlund¨ et al. Switzerland) was administered by blowpipe 2011). The PCRs for feline calicivirus (FCV), every second day over a period of 8 d. Initial canine distemper virus (oropharyngeal swab), signs of severe blepharospasm, anorexia, and parvovirus, feline coronavirus (rectal swab), apathy progressively resolved and by the end and feline leukemia provirus (FeLV; blood) of the treatment, the lynx appeared healthy. It were negative (Meli et al. 2009). Western blot was re-examined and resampled under anes- for feline immunodeficiency virus antibodies thesia14dpostcapture.Botheyeswere and enzyme-linked immunosorbent assay (ELISA) for FeLV p27 antigen were negative clinically inconspicuous and body condition (Lutz et al. 1988). Hematology and blood was good (16.5 kg). No tissue irritations chemistry did not reveal abnormalities com- related to the oxytetracycline injections were pared to apparently healthy, free-ranging lynx observed. Conjunctival swabs were PCR- from Switzerland. negative for C. felis. The lynx was fitted with The available data pointed at a chlamydial a global positioning system (GPS) radiocollar conjunctivitis. An intramuscular injection of and released into the wild. It was photo- 9.7 mg/kg oxytetracycline (Engemycint, 100 graphed with a camera-trap 3 mo later and LETTERS 3 appeared in good body condition, with a Nationalpark Kalkalpen for their contribu- normal left eye. tions. Here we have reported a novel case of a C. felis infection with associated conjunctivitis in LITERATURE CITED a free-ranging wild felid. A higher load of C. Berris F, Tolentino J, Flores M, Reyes MF. 2015. felis DNA was detected in the affected left Detection of Chlamydophila felis antibodies in Felis than in the healthy right eye, suggesting a catus and Panthera tigris at a wildlife facility using recent bacterial spread from left to right. The ELISA. Philipp J Vet Anim Sci 41:80–84. observed ocular signs, the rapid clinical Dean R, Harley R, Helps C, Caney S, Gruffydd-Jones T. improvement under appropriate treatment, 2005. Use of quantitative real-time PCR to monitor the response of Chlamydophila felis infection to and the absence of FHV-1, FCV, and M. felis doxycycline treatment. J Clin Microbiol 43:1858– supported the etiologic role of C. felis.In 1864. domestic cats with ocular chlamydiosis, spon- Gruffydd-Jones T, Addie D, Bela´k S, Boucraut-Baralon C, taneous remissions occur (Gruffydd-Jones et Egberink H, Frymus T, Hartmann K, Hosie MJ, al. 2009), but short treatment periods can Lloret A, Lutz H. 2009. Chlamydophila felis infec- result in chronic persistent infections and tion. ABCD guidelines on prevention and manage- ment. J Feline Med Surg 11:605–609. recurrence of clinical signs (Dean et al. 2005). Herce´ T. 2011. Spatio-temporal interactions between In this lynx, the negative PCR results obtained sympatric felids in the Swiss Jura Mountains. 9 d after the first oxytetracycline injection and Internship report, Universite´ de Franche-Comte´, the inconspicuous picture 3 mo after release Besanc¸on, France. http://www.kora.ch/fileadmin/ suggested a complete recovery. file_sharing/5_Bibliothek/52_KORA_Publikationen/ The source of infection was unknown. 524_Thesis/Herce_2011_Spatio-temporal_ interactions_between_sympatric_felids_Swiss_Jura_ Natural transmission occurs by close contact, Mountains.pdf. 21 pp. Accessed April 2018. with ocular secretions playing
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