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Phaeohyphomycosis caused by Alternaria alternata in a mare
F J Cabañes1, L Abarca, M R Bragulat
1Departamento de Patología y Producciones Animales (Microbiologia), Facultad de Veterinaria, Universidad Autónoma de Barcelona, Spain.
Summary
A rare fungal infection, phaeohyphomycosis caused by Alternaria alternata, was diagnosed in a young Spanish horse. This marks the first reported case of this specific equine fungal infection in Spain.
Area of Science:
- Veterinary Mycology
- Equine Infectious Diseases
Background:
- Phaeohyphomycosis is a group of fungal infections caused by dematiaceous (darkly pigmented) fungi.
- Alternaria alternata is a common mold found worldwide, typically causing allergies or plant diseases, but can cause opportunistic infections in animals.
Observation:
- A 5-month-old Spanish mare presented with symptoms indicative of a fungal infection.
- Direct microscopic examination revealed fungal elements consistent with phaeohyphomycosis.
- Repeated fungal cultures successfully isolated Alternaria alternata as the causative agent.
Findings:
- The study documents the first confirmed case of phaeohyphomycosis caused by Alternaria alternata in a horse in Spain.
- Diagnostic methods included direct microscopy and fungal culture, confirming the etiological agent.
Implications:
- This case highlights the potential for Alternaria alternata to cause significant infections in equines, even in young animals.
- Increased awareness and diagnostic vigilance are necessary for identifying and managing phaeohyphomycosis in horses, particularly in regions where it has not been previously documented.