Septicemia and peritonitis due to Actinobacillus equuli infection in an adult horse.

This study discusses a case of a rare Actinobacillus equuli infection in an adult horse which led to septicemia and peritonitis, noting that the origin of the infection is unknown, but potential links to treatment related injuries have been suggested.

Introduction to the Study

• The study presents a case of a rare type of infection, Actinobacillus equuli, in an adult horse. This infection lead to septicemia, a severe bloodstream infection, and peritonitis, an inflammation of the peritoneum, the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs.

Main Findings of the Study

• The infection was discovered at necropsy in an 8-year-old Saddlebred mare. The Saddlebred is a breed of horse known for its easy style of riding and versatility.
• The researchers were not able to establish the source of the infection. However, they hypothesize that small necrotic colonic mucosal lesions could be the possible source. These lesions were presumed to have been a result of a phenylbutazone treatment, a nonsteroidal anti-inflammatory drug commonly used in treating pain and fever in animals.

Treatment and Importance of Detection

• The researchers mention that in the few acute cases of A. equuli peritonitis previously reported, the response to antimicrobial treatment has been good. This suggests that if caught early, the infection can potentially be treated effectively with antimicrobials.
• The paper concludes by highlighting the importance of properly identifying horses suffering from A. equuli peritonitis. Recognition of such infections is crucial for successful treatment and can potentially prevent further deterioration of the horse’s health condition.