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Volume 19, Number 2—February 2013
Dispatch

Macrolide- and Rifampin-Resistant Rhodococcus equi on a Horse Breeding Farm, Kentucky, USA

Alexandra J. Burton, Steeve GiguèreComments to Author , Tracy L. Sturgill, Londa J. Berghaus, Nathan M. Slovis, Jeremy L. Whitman, Court Levering, Kyle R. Kuskie, and Noah D. Cohen
Author affiliations: Author affiliations: University of Georgia, Athens, Georgia, USA (A.J. Burton, S. Giguère, T.L. Sturgill, L.J. Berghaus); Hagyard Equine Medical Institute, Lexington, Kentucky, USA (N.M. Slovis); Equine Medical Associates, Lexington (J.L. Whitman, C. Levering); Texas A & M University, College Station, Texas, USA (K.R. Kuskie, N.D. Cohen)

Main Article

Table 2

Characteristics of pretreatment and posttreatment Rhodococcus equi isolates obtained from foals on a horse breeding farm, Kentucky, USA, 2011*

Foal ID no. Pretreatment isolates (cluster) % Similarity† Posttreatment isolates (cluster)
7-11 S 97.5 S
5-11 S 84.3 S
14-11 R (E) 96.4 R (E)
3-11 R (B) 96.5 R (B)
4-11 R (B) 97.4 R (B)
17-11 R (C) 98.5 R (C)
20-11 S 83.1 R (B)
18-11 S 78 R (C)
11-11 R (B) 87.2 S
15-11‡ S 83.1 S
NA 73.2 R (D)
16-11‡ S 78.8 R (D)
R (B) 80.8 NA

*ID, identification; S, susceptible; R, resistant; NA, not applicable.
†Determined by using Pearson correlation coefficient and unweighted pair-group method with arithmetic means.
‡Two isolates were recovered from the pretreatment (foal ID 16-11) or posttreatment (foal ID 15-11) sampling.

Main Article

1Current affiliation: Kalon Biotherapeutics LLC, College Station, Texas, USA.

Page created: January 22, 2013
Page updated: January 22, 2013
Page reviewed: January 22, 2013
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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