Diagnostic microbiology and infectious disease · 2026
Case Report : Streptococcus equi subspecies zooepidemicus bacteriemia and spondylodiscitis following direct contact with a horse.
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Potvin Élie, De Rico Luca
Аннотация
INTRODUCTION: Streptococcus equi subspecies zooepidemicus is a zoonotic pathogen that commonly colonizes the respiratory tract and oral cavity of horses. Human infections are rare and most frequently present as bacteremia, meningitis, or pneumonia.
PATIENTS AND METHODS: We report the case of an 88-year-old patient who developed Streptococcus equi subspecies zooepidemicus spondylodiscitis after direct and exclusive contact with a live horse. Clinical, microbiological, and radiological findings were reviewed.
RESULTS: Blood cultures identified Streptococcus equi subspecies zooepidemicus. Magnetic resonance imaging confirmed spondylodiscitis. The patient was successfully treated with a 45-day course of intravenous ceftriaxone followed by a 10-day course of oral levofloxacin, resulting in favorable clinical evolution.
CONCLUSION: This appears to be the first reported case of Streptococcus equi subspecies zooepidemicus spondylodiscitis associated with direct and exclusive contact with a live horse. Clinicians should inquire about horse exposure when evaluating invasive streptococcal infections.
PATIENTS AND METHODS: We report the case of an 88-year-old patient who developed Streptococcus equi subspecies zooepidemicus spondylodiscitis after direct and exclusive contact with a live horse. Clinical, microbiological, and radiological findings were reviewed.
RESULTS: Blood cultures identified Streptococcus equi subspecies zooepidemicus. Magnetic resonance imaging confirmed spondylodiscitis. The patient was successfully treated with a 45-day course of intravenous ceftriaxone followed by a 10-day course of oral levofloxacin, resulting in favorable clinical evolution.
CONCLUSION: This appears to be the first reported case of Streptococcus equi subspecies zooepidemicus spondylodiscitis associated with direct and exclusive contact with a live horse. Clinicians should inquire about horse exposure when evaluating invasive streptococcal infections.