MRSA carriage in the equine community: an investigation of horse-caretaker couples.

The research focuses on the carriage of Methicillin-resistant Staphylococcus aureus (MRSA) among horses and their caretakers, examining its prevalence and transmission risks. The study finds that outside equine clinics, the extent of MRSA reservoir in horses and their caretakers was low.

Objective of the Research

• The research aims to explore the extent of MRSA reservoir in healthy horses from the general population and the associated health hazard for their daily caretakers.
• It investigates the degree of MRSA carriage in healthy horse-caretaker couples from a variety of home farms, focusing specifically on the risk of equine and zoonotic transmission and infection.

Methodology

• The researchers conducted screenings for MRSA in 166 horse-caretaker couples at five equine gatherings, swabbing the anterior nares of both the horses and their handlers.
• They carried out a genotyping and antimicrobial susceptibility testing on all MRSA isolates found in the screenings.
• An epidemiologic survey was also conducted as part of the study.

Findings

• The study uncovered that only 2.4% of humans and 1.2% of their horses tested positive for MRSA.
• In cases where both the horse and handler were detected to carry MRSA, the isolates belonged to identical, livestock-associated spa types (t011 and t2330) and demonstrated identical patterns of antimicrobial susceptibility.
• The researchers found no significant association between horses’ MRSA carriage status and their transportation to an event.

Conclusions

• The research concludes that outside of equine clinics, the extent of the MRSA reservoir in horses and their caretakers was relatively low.
• Travel to an equine gathering was not found to be a risk factor for equine MRSA carriage.
• However, the study did find indications that contact with veterinary care might potentially predispose both healthy horses and their handlers to carry MRSA.