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Proctitis associated with chlamydial infection in a koala
1Department of Veterinary Pathology B12, University of Sydney, New South Wales.
Australian Veterinary Journal
|August 1, 1996
Summary
Chlamydial infection caused asymptomatic chronic proctitis in an aged koala. This finding highlights a potential reservoir for chlamydial infections in koala populations.
Area of Science:
- Veterinary Pathology
- Microbiology
- Wildlife Disease
Background:
- Chlamydial infections are known in koalas, primarily affecting the urogenital and ocular systems.
- Proctitis, or inflammation of the rectum, has not been previously reported as a manifestation of chlamydial infection in koalas.
Observation:
- A 17-year-old free-living male koala presented with euthanasia and was found to have asymptomatic chronic proctitis.
- Histological examination revealed severe inflammation in the terminal rectum, extending into the common vestibule.
Findings:
- Chlamydial organisms were identified in the rectal surface epithelium using Giminez' stain and immunoperoxidase staining.
- The infection was associated with concurrent cystitis, prostatitis, urethritis, and conjunctivitis, with organisms detected in the bladder, prostate, and urethra.
Implications:
- Transmission routes may include direct sexual contact or ascending infection from the urogenital tract.
- This previously unreported chlamydial proctitis in koalas could serve as a reservoir for disease transmission within the population.
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