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.