Effectiveness of Cleaning and Sanitation of Stable Environment and Riding Equipment Following Contamination With Streptococcus equi Subsp. equi.
Authors: Ryden Anneli, Fernström Lise-Lotte, Svonni Elin, Riihimäki Miia
Journal: Journal of equine veterinary science
Summary
# Editorial Summary: Cleaning protocols for S. equi contamination in stables Strangles transmission via contaminated equipment and stable surfaces remains a significant biosecurity concern, yet data on effective decontamination strategies have been limited. Ryden and colleagues experimentally inoculated common stable materials—wood, concrete, plastic, leather halters, leather gloves and polyester webbing—with laboratory and clinical strains of *Streptococcus equi* subsp. *equi*, then evaluated bacterial survival at baseline and following standard cleaning and sanitation protocols. Standard cleaning and sanitation rendered all materials culture-negative except polyester halters, which retained viable bacteria even after washing at 40°C; however, washing polyester at 60°C eliminated the pathogen, whilst leather proved inhospitable to S. equi survival regardless of cleaning intervention. These findings suggest that routine yard sanitation is broadly effective for strangles control, but equipment material composition significantly influences decontamination outcomes—polyester halters warrant particular attention and should be washed at elevated temperatures, whilst leather items present lower risk despite their higher initial contamination potential. For practitioners managing strangles outbreaks, this work provides evidence-based guidance for targeting cleaning efforts and selecting equipment materials with genuine biosecurity advantages.
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Practical Takeaways
- •Standard cleaning and sanitation protocols are effective for most stable materials and equipment contaminated with S. equi, but polyester halters require hot water washing (60°C) to reliably eliminate the bacteria
- •Leather items naturally resist S. equi colonization and can be safely used without special sanitation measures, making them a practical choice for infection control
- •When managing S. equi outbreaks, pay particular attention to polyester webbing halters and other webbing equipment—these require higher temperature washing than routine protocols to eliminate viable bacteria
Key Findings
- •All materials except polyester halters were culture negative after standard cleaning and sanitation protocols
- •Leather materials poorly supported S. equi survival even without cleaning intervention
- •Polyester webbing halters retained viable S. equi after washing at 40°C with drying, but were culture negative when washed at 60°C
- •Survival of S. equi varied significantly between different material types and bacterial strains tested