Pansusceptible Staphylococcus aureus isolated from a horse in the Roca Quemada area, Turrialba, Costa Rica

Access to veterinary medicine in indigenous territories poses significant challenges, particularly in Costa Rica, where services are concentrated in urban areas. This report describes a skin lesion in a mare from the Roca Quemada community, which has limited veterinary care that may influence the prevalence of antibiotic resistance. On September 16, 2023, a bacteriological culture performed on a sample from the lesion revealed the presence of Staphylococcus aureus. Antibiotic sensitivity testing showed that the isolated strain was susceptible to all antibiotics tested. This finding contrasts with the increasing worldwide prevalence of methicillin-resistant S. aureus, suggesting that limited antibiotic exposure in rural areas may prevent the emergence of resistant strains. This study highlights the importance of responsible antibiotic use, epidemiological surveillance, and education on wound management to combat antimicrobial resistance. The results underscore the absence of regular veterinary interventions and antibiotic exposure, highlighting the need for continued monitoring and improved access to veterinary care in rural communities. The isolation of a pansusceptible S. aureus strain in a rural setting suggests that the limited access to veterinary services and limited antibiotic usage may play a crucial role in maintaining high susceptibility rates.