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Updated: Jul 5, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
High risk for nasal carriage of methicillin-resistant Staphylococcus aureus among Danish veterinary practitioners
Arshnee Moodley1, Emily C Nightingale, Marc Stegger
1Department of Veterinary Pathobiology, Stigbøjlen 4, Frederiksberg C, Denmark. asm@life.ku.dk
Objectives:
Due to their multiple antibiotic resistance properties, methicillin-resistant Staphylococcus aureus (MRSA) are a major public health problem. After the recently described emergence of MRSA in animals, the authors investigated the risk of nasal MRSA carriage among people with professional contact with animals.
Methods:
Nasal swabs and information on animal exposure and known MRSA risk factors were obtained from participants (N=702) at five conferences organized by national veterinary and farmer associations and students at a business school in Denmark. All of the participants were screened by standard microbiological techniques for MRSA detection and characterization.
Results:
MRSA carriage was significantly (P<0.02) higher among the veterinary practitioners (3.9%) than among the participants not professionally exposed to animals (0.7%). Six of the nine MRSA strains isolated from veterinary practitioners belonged to clonal complexes (CC) previously associated with horses (CC8), small animals (CC22), and pigs (CC398). Although four of the nine positive veterinarians carried the CC associated with pigs, exposure to small animals, cattle, or horses, but not to pigs, was found to be a significant risk factor.
Conclusions:
The results indicate that veterinarians are at risk of MRSA carriage. Veterinary professionals should be informed about this emerging occupational health risk and educated about preventive measures. Collaboration between national medical and veterinary institutions is urgently needed to control the spread of these unwanted bacteria in the community.
Insights
Veterinary professionals have a higher risk of carrying methicillin-resistant Staphylococcus aureus (MRSA). Increased awareness and preventive measures are crucial to control the spread of this antibiotic-resistant bacteria.
Area of Science:
- Veterinary Medicine
- Public Health
- Infectious Diseases
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant public health threat due to its antibiotic resistance.
- The emergence of MRSA in animals necessitates an investigation into occupational risks for humans.
- Understanding MRSA transmission pathways is vital for effective public health interventions.
Purpose of the Study:
- To assess the risk of nasal MRSA carriage among individuals with professional contact with animals.
- To identify specific animal exposures associated with increased MRSA carriage in veterinary professionals.
Main Methods:
- A cross-sectional study involving 702 participants at veterinary and farmer association conferences.
- Collection of nasal swabs and data on animal exposure and MRSA risk factors.
- Standard microbiological techniques for MRSA detection and characterization.
Main Results:
- Veterinary practitioners showed a significantly higher rate of MRSA carriage (3.9%) compared to those without animal exposure (0.7%).
- MRSA strains isolated from veterinarians were associated with clonal complexes previously linked to horses, small animals, and pigs.
- Exposure to small animals, cattle, or horses, but not pigs, was identified as a significant risk factor for MRSA carriage.
Conclusions:
- Veterinarians are identified as an occupational group at increased risk for MRSA carriage.
- Enhanced awareness and education on preventive measures are recommended for veterinary professionals.
- Inter-institutional collaboration is essential to manage the community spread of MRSA.
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