Enterotoxigenic Clostridium perfringens type A necrotic enteritis in a foal.

This research article discusses a case of a crossbred foal that developed an acute enteric infection, and died less than 48 hours after birth. The study found that the disease was caused by a specific type of bacteria, enterotoxigenic Clostridium perfringens type A, despite initial findings suggesting another type.

Case Overview

The research revolves around a Thoroughbred-Quarter Horse crossbred foal which developed a severe digestive disorder and subsequently died within 48 hours of its birth. The symptoms displayed by the foal, along with the post-mortem examination results, suggested an infection due to Clostridium perfringens type C.

• The foal developed hemorrhagic enteritis, a condition marked by severe inflammation and damage to the intestinal linings.
• The rapid onset and escalation of the disease resulted in death within 48 hours, showing the aggressive nature of the infection.

Investigation and Findings

The researchers conducted both gross and histologic examinations on the foal to ascertain the cause of death.

• Large numbers of bacteria identified as Clostridium perfringens were found in samples from the foal’s intestines.
• Genotyping of the bacterial isolates however indicated they were of a different strain than initially thought – enterotoxigenic Clostridium perfringens type A instead of type C.
• These isolates were further tested in vitro (lab setting) to confirm the production of Clostridium perfringens enterotoxin, a toxic protein causing symptoms of the disease.

Conclusion

The research concludes by suggesting that enterotoxigenic Clostridium perfringens type A can cause severe enteric diseases in horses; this contrasts the initial hypothesis of a type C infection based on the symptoms and severity.

• This finding is noteworthy as it could refine the understanding of digestive diseases in horses, and improve diagnosis and treatment strategies.
• It also indicates the need for more research in differentiating between the effects of varying bacterial strains, how they operate, and their potency in causing disease.