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Streptococcus ovis associated abortion in an Icelandic mare
J S Agerholm1, P Damborg2, M Christoffersen1
1Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Højbakkegaard Alle 5A, DK-2630 Taastrup, Denmark.
Journal of Equine Veterinary Science
|September 29, 2024
Summary
Streptococcus ovis, typically found in sheep, caused abortion in a mare by infecting the fetus and placenta. This infection likely occurred after a veterinary procedure disrupted the mare's cervix.
Area of Science:
- Veterinary Medicine
- Microbiology
- Equine Health
Background:
- Streptococci are known opportunistic causes of abortion in mares, often ascending from the lower genital tract.
- Streptococcus ovis is primarily recognized as a pathogen causing inflammatory lesions in sheep.
Observation:
- A case of equine abortion involved Streptococcus ovis isolated from the fetal lung.
- The infection was linked to fetal bronchopneumonia, umbilical cord cellulitis, and placentitis.
Findings:
- Streptococcus ovis was identified as the sole bacterial agent responsible for the equine abortion.
- The mare had contact with sheep, a known host for S. ovis.
- A recent veterinary procedure involving cervical instrumentation may have facilitated bacterial entry.
Implications:
- This case highlights Streptococcus ovis as a potential cause of abortion in horses.
- It emphasizes the importance of considering cross-species pathogen transmission in veterinary diagnostics.
- The findings suggest that cervical procedures in pregnant mares require careful consideration to prevent ascending infections.
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