Contagious equine metritis: distribution of organisms in experimental infection of mares.

This article examines the distribution of infectious bacteria in mares affected with contagious equine metritis, a sexually transmitted disease. It was found that the bacteria were primarily located in the uterus and cervix, but were also found in other components of their genital tract.

Research Subject and Methodology

• The research focused on contagious equine metritis or CEM, a type of sexually transmitted disease in horses. The study was conducted on mares to analyze the distribution of the bacteria causing CEM within their bodies.
• Methods included injecting contagious equine metritis bacteria into the uterus of mares and utilizing a bacteriologic cultural technique and an indirect immunofluorescent staining technique. These methods helped detect and track the presence of bacteria within different parts of the mares’ genital tract.

Findings

• The findings showed that within 14 days of inoculation, the bacteria were commonly found in the lumen of the uterus and the cervix. It was found less frequently in the vagina, vestibule, clitoral fossa, clitoral sinus, and uterine tubes.
• Between 21 to 116 days after the inoculation, the bacteria were occasionally found on the ovarian surface, uterine tubes, uterus, cervix, and vagina but were more frequently discovered in the clitoral sinus and clitoral fossa.

Implications and Future Research

• The study shows the distribution of bacteria in mares affected with contagious equine metritis. Knowledge of the bacterial distribution can help inform treatment strategies, manage disease spread, and provide valuable information for further studies.
• Interestingly, the bacteria distribution did not show any significant difference in mares that had undergone clitorectomy. This finding suggests the bacteria’s ability to persist and spread within the genital tract regardless of this procedure, hinting at its resilience.
• This implies that future research could further explore this resilience, investigating other potential treatment methods or preventative measures to control and combat this sexually transmitted disease in horses.