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Volume 20, Number 3—March 2014
Letter

Staphylococcus delphini and Methicillin-Resistant S. pseudintermedius in Horses, Canada

Jason W. StullComments to Author , Durda Slavić, Joyce Rousseau, and J. Scott Weese
Author affiliations: University of Guelph, Guelph, Ontario, Canada

Main Article

Table

Results of investigation of Staphylococcus delphini and S. pseudintermedius infection in horses, Canada*

Isolate ID or source
 Species
 Animal age and status
 Medical history
 Sample source
 Date sampled
 Mixed infection?
 Identification method†
MRSP-1 MRSP, dt11a 1 y, filly Sinusitis Frontal sinus surgery 2011 Aug Yes A
SD-1 S. delphini (group B) 8 y, mare Chronic otitis externa Ear canal swab 2011 Feb Yes B
SD-2 S. delphini (group B) 5 y, mare Streptococcus equi surveillance Nasopharyngeal wash 2011 Jun No B
SD-3 S. delphini (group A) 5 y, mare S. equi surveillance Nasopharyngeal wash 2011 Jun No B
SD-4
 S. delphini (group B)
 4 y, mare
 S. equi surveillance
 Nasopharyngeal wash
 2011 Jul
 No
 B
AHLD MRSP 4 y, mare Cough Respiratory tract 2011 Mar Yes C
MRSP 24 y, UNK Dermatitis (pastern) Skin (pastern) 2011 Apr No C
S. pseudintermedius 6 y, gelding Chronic draining abscess Wound 2011 May No C
MRSP 8 y, mare Nasal/sinus swelling Upper respiratory tract 2011 Jun Yes C
MRSP 19 y, mare Previous uterine infection Uterus 2011 Jun Yes C
MRSP 11 y, gelding Draining sores on neck Neck wound 2011 Jul No C
MRSP 4 y, mare Wound (coronary band) Coronary band wound 2011 Jul Yes C
S. pseudintermedius UNK, mare Prebreeding examination Uterus 2011 Aug No C
S. delphini 3 mo, filly Chronic pneumonia Nasal passage 2012 Jun No D

*ID, identification; MRSP, methicillin-resistant S. pseudintermedius; AHLD, Animal Health Laboratory Database; UNK, unknown.
†A, matrix-assisted laser desorption/ionization–time of flight mass spectrometry (MALDI-TOF), MRSP PCR, direct repeat unit typing, mecA PCR, penicillin-binding protein 2a latex agglutination test, broth microdilution; B, MALDI-TOF, S. delphini PCR, sodA sequence analysis, broth microdilution; C, standard biochemical methods, disk diffusion; D, MALDI-TOF, disk diffusion.

Main Article

Page created: February 19, 2014
Page updated: February 19, 2014
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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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