J Vet Sci.  2011 Jun;12(2):195-197. 10.4142/jvs.2011.12.2.195.

Etiologic and epidemiologic analysis of bacterial infectious upper respiratory disease in Thoroughbred horses at the Seoul Race Park

• Ryu SH
• Koo HC
• Lee YW
• Park YH
• Lee CW

• KMID: 1106564
• DOI: http://doi.org/10.4142/jvs.2011.12.2.195

Abstract

Infectious upper respiratory disease (IURD) of Thoroughbred racehorses has been a frequent problem (29.6% of incidence) at the Seoul Race Park (Korea). Risk factors for IURD include the season with a high transfer rate (summer and fall), the stabling period (< or = 3 months), and age (2 to 3 years old), suggesting that the movement and new environment may have depressed the immune system of the horses and decreased their ability to respond properly to pathogens. The bacterial strains (n = 98) isolated from IURD horses included Pseudomonas spp., Escherichia coli, Staphylococcus spp., Streptococcus equi subsp. equi and zooepidemicus.

Keyword

infectious upper respiratory disease; risk factors; Streptococcus equi subsp. equi; Streptococcus equi subsp. zooepidemicus; Thoroughbred racehorses

MeSH Terms

Animals
Bacteria/*isolation & purification
Bacterial Infections/epidemiology/immunology/microbiology/*veterinary
Horse Diseases/epidemiology/immunology/*microbiology
Horses
Incidence
Microbial Sensitivity Tests
Republic of Korea/epidemiology
Respiratory Tract Infections/epidemiology/immunology/microbiology/*veterinary
Risk Factors

Figure

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  Fig. 1 Comparison of seasonal population turnover rates (A) and seasonal incidence rates of infectious upper respiratory disease (IURD) (B) at the Seoul Race Park (2001~2005). (A-B) a-dLetters indicate statistical differences (p < 0.01). The main populations of newly stabled horses (A) as well as IURD patients (B) were 2 and 3 years old (yr).

Reference

1. Boguta L, Gradzki Z, Borges E, Maurin F, Kodjo A, Winiarczyk S. Bacterial flora in foals with upper respiratory tract infections in Poland. J Vet Med B Infect Dis Vet Public Health. 2002. 49:294–297.

2. Carman S, Rosendal S, Huber L, Gyles C, McKee S, Willoughby RA, Dubovi E, Thorsen J, Lein D. Infectious agents in acute respiratory disease in horses in Ontario. J Vet Diagn Invest. 1997. 9:17–23.

3. Clinical and Laboratory Standards Institute (CLSI). CSLI document M31-S1. Performance Standards for Antimicrobial Disk and Dilution Susceptibility Tests for Bacteria Isolated from Animals; Informational Supplement. 2004. Wayne: CLSI.

4. Clinical and Laboratory Standards Institute (CLSI). CSLI document M100-S17. Performance Standards for Antimicrobial Susceptibility Testing: Seventeenth Informational Supplement. 2007. Wayne: CLSI.

5. Erskine RJ, Walker RD, Bolin CA, Bartlett PC, White DG. Trends in Antibacterial susceptibility of mastitis pathogens during a seven-year period. J Dairy Sci. 2002. 85:1111–1118.

6. Fey K, Schmid P. Susceptibility of bacterial isolates from the equine respiratory tract to trimethoprim, sulfadoxine, sulfadimethoxine and combinations of these compounds. Tierarztl Prax. 1995. 23:148–154.

7. Guérin-Faublée V, Tardy F, Bouveron C, Carret G. Antimicrobial susceptibility of Streptococcus species isolated from clinical mastitis in dairy cows. Int J Antimicrob Agents. 2002. 19:219–226.

8. Mumford EL, Traub-Dargatz JL, Carman J, Callan RJ, Collins JK, Goltz KL, Romm SR, Tarr SF, Salman MD. Occurrence of infectious upper respiratory tract disease and response to vaccination in horses on six sentinel premises in northern Colorado. Equine Vet J. 2003. 35:72–77.