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Emerging infectious diseases2005; 11(3); 430-435; doi: 10.3201/eid1103.040481

Methicillin-resistant Staphylococcus aureus in horses and horse personnel, 2000-2002.

Abstract: Methicillin-resistant Staphylococcus aureus (MRSA) infection was identified in 2 horses treated at a veterinary hospital in 2000, prompting a study of colonization rates of horses and associated persons. Seventy-nine horses and 27 persons colonized or infected with MRSA were identified from October 2000 to November 2002; most isolations occurred in a 3-month period in 2002. Twenty-seven (34%) of the equine isolates were from the veterinary hospital, while 41 (51%) were from 1 thoroughbred farm in Ontario. Seventeen (63%) of 27 human isolates were from the veterinary hospital, and 8 (30%) were from the thoroughbred farm. Thirteen (16%) horses and 1 (4%) person were clinically infected. Ninety-six percent of equine and 93% of human isolates were subtypes of Canadian epidemic MRSA-5, spa type 7 and possessed SCCmecIV. All tested isolates from clinical infections were negative for the Panton-Valentine leukocidin genes. Equine MRSA infection may be an important emerging zoonotic and veterinary disease.
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Publication Date: 2005-03-11 PubMed ID: 15757559PubMed Central: PMC3298236DOI: 10.3201/eid1103.040481Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article discusses a study of Methicillin-resistant Staphylococcus aureus (MRSA) infections and colonization in horses and personnel at a veterinary hospital and a thoroughbred farm in Ontario from 2000 to 2002, emphasizing the potential for equine MRSA infection as an emerging zoonotic and veterinary disease.

Study Design and Participants

  • The study arose from the identification of MRSA infection in two horses treated at a veterinary hospital in 2000.
  • Between October 2000 and November 2002, the researchers identified 79 horses and 27 people colonized or infected with MRSA.
  • The test subjects involved were largely from the veterinary hospital and one particular thoroughbred farm in Ontario.

Findings and Implications

  • A significant proportion of the isolates came from these two locations. 34% of equine isolates were from the veterinary hospital while 51% came from the thoroughbred farm. Among humans, 63% of isolates were recorded at the hospital and 30% at the farm.
  • However, most of the isolations occurred in a three-month period in 2002, indicating a sudden flare-up of infections.
  • The study found evidence of clinical infection in 16% of the horses and 4% of the humans in the studied pool.
  • Almost all isolates in both horses and humans were found to be subtypes of Canadian epidemic MRSA-5, spa type 7 and possessed SCCmecIV. This indicates a common source or carrier of the virus.
  • Moreover, none of the tested isolates from clinical infections contained the Panton-Valentine leukocidin genes, which are often associated with virulent strains of MRSA.
  • The authors suggest that equine MRSA infection might be an important emerging zoonotic and veterinary disease, signaling the need for improved surveillance and control measures in equine environments.

Cite This Article

APA
Weese JS, Archambault M, Willey BM, Hearn P, Kreiswirth BN, Said-Salim B, McGeer A, Likhoshvay Y, Prescott JF, Low DE. (2005). Methicillin-resistant Staphylococcus aureus in horses and horse personnel, 2000-2002. Emerg Infect Dis, 11(3), 430-435. https://doi.org/10.3201/eid1103.040481

Publication

Emerging infectious diseases
ISSN: 1080-6040
NlmUniqueID: 9508155
Country: United States
Language: English
Volume: 11
Issue: 3
Pages: 430-435

Researcher Affiliations

Weese, J S
  • Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada. jsweese@uoguelph.ca
Archambault, M
    Willey, B M
      Hearn, P
        Kreiswirth, B N
          Said-Salim, B
            McGeer, A
              Likhoshvay, Y
                Prescott, J F
                  Low, D E

                    MeSH Terms

                    • Animal Husbandry
                    • Animal Technicians
                    • Animals
                    • Carrier State
                    • Disease Reservoirs
                    • Horse Diseases / epidemiology
                    • Horse Diseases / microbiology
                    • Horses / microbiology
                    • Humans
                    • Methicillin Resistance
                    • Ontario / epidemiology
                    • Staphylococcal Infections / epidemiology
                    • Staphylococcal Infections / veterinary
                    • Staphylococcus aureus / classification
                    • Staphylococcus aureus / drug effects
                    • Staphylococcus aureus / isolation & purification
                    • Students, Health Occupations
                    • Time Factors
                    • Veterinarians

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