Chlamydia pecorum Associated With an Outbreak of Infectious Keratoconjunctivitis in Semi-domesticated Reindeer in Sweden

Frontiers in Veterinary Science
Javier Sánchez RomanoMorten Tryland

Abstract

Infectious keratoconjunctivitis (IKC), the most common ocular disease in ruminants worldwide, has affected semi-domesticated Eurasian reindeer (Rangifer tarandus tarandus) for over 100 years, both as individual cases and in outbreaks affecting tens to hundreds of animals. Recurrent IKC outbreaks have been affecting a semi-domesticated reindeer herd in Östra Kikkejaure (Norrbotten county, Sweden) from 2014. The latest episode of these recurrent outbreaks, in winter 2016/2017, was investigated in this study. Clinical findings were in line with previous reports of IKC in semi-domesticated reindeer and the clinical signs displayed by the affected animals (n = 30) included increased lacrimation, follicular conjunctivitis, purulent secretions around the affected eyes and corneal edema. Laboratory analyses of the samples revealed the presence of Chlamydiaceae in most samples obtained from the clinically affected animals (98.3%, n = 60), but also a high seroprevalence of cervid herpesvirus 2 (CvHV2) antibodies (56.6%, n = 53). Moraxella bovoculi was isolated from nine IKC-affected animals during the outbreak (45.0%, n = 20). All affected animals were treated with long-acting antibiotics and recovered from the disease, testing negative ...Continue Reading

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Citations

May 7, 2019·Frontiers in Veterinary Science·Morten TrylandUlrika Rockström
Aug 23, 2020·International Journal of Environmental Research and Public Health·Jan Åge RisethMorten Tryland
May 30, 2019·Microorganisms·Heng Choon CheongWon Fen Wong
May 30, 2021·The Veterinary Clinics of North America. Food Animal Practice·John Dustin LoyGabriele Maier
Jul 3, 2021·International Journal of Environmental Research and Public Health·Javier Sánchez RomanoAnn Albihn

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Datasets Mentioned

BETA
PRJNA512530

Methods Mentioned

BETA
enzyme-linked immunosorbent assay
PCR
Amplicon Sequencing

Software Mentioned

BLASTn
CLC
CLC genomics
CLC genomics workbench

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