Yersiniosis causing deaths among cattle and deer in Scotland.

Yersiniosis must be considered in acute mortality events in cattle and deer herds.

This case report documents yersiniosis outbreaks causing mortality in both cattle and deer populations in Scotland. Yersinia pseudotuberculosis and/or Yersinia enterocolitica infections resulted in clinical disease and death in affected herds and wildlife populations. The disease presented with various clinical manifestations including septicemia, enteritis, and systemic infection. Post-mortem examinations revealed characteristic lesions in lymphoid tissues and gastrointestinal tracts. The outbreak investigation highlighted the zoonotic potential of Yersinia species and their significance as pathogens affecting both domestic livestock and wild ruminants. Environmental and management factors likely contributed to disease transmission and spread within susceptible populations. The report emphasizes the importance of recognizing yersiniosis in differential diagnoses for acute mortality events in ruminants and implementing appropriate biosecurity measures, diagnostic protocols, and herd management strategies to prevent future outbreaks.

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