New dominant spa type t2741 in livestock-associated MRSA (CC398-MRSA-V) in Finnish fattening pigs at slaughter

Table 1 Characteristics of 50 S. aureus isolates collected from fattening pigs at slaughter in Finland

CC	spa typing	SCCmec	Herd	Resistance phenotype^a	Resistance genes^b	lnuB	se^c	fnbB	agr	cap
CC1 (n = 4)	t127 (n = 1)	V	H2	PEN, OXA, FOX, TET, CLI, ERY	mecA, blaZ/I/R, tetK, ermB,	-	seh	+	agrIII	cap8
	t1381 (n = 3)	V	H2	PEN, OXA, FOX, TET, CLI, ERY	mecA, blaZ/I/R, tetK, ermB	-	seh	+	agrIII	cap8
CC398 (n = 46)	t011 (n = 1)	V	H18	PEN, OXA, FOX, TET, CLI, ERY	mecA, blaZ/I/R, tetK/M, ermB	+	-	-	agrI	cap5
	t034 (n = 7)	V	H1, H7, H12, H18	n = 6: PEN, OXA, FOX, TET, CLI	mecA, blaZ/I/R, tetK/M	+	-	+	agrI	cap5
			H10	n = 1: PEN, OXA, FOX, TET, CLI, CIP	mecA, blaZ/I/R, tetK/M, aadD	+	-	+	agrI	cap5
	t108 (n = 5)	V	H3, H16	PEN, OXA, FOX, TET	mecA, blaZ/I/R, tetK/M	-	-	+	agrI	cap5
	t2741 (n = 33)	V	H1, H5, H6, H7, H8, H9, H11, H13, H14, H17, H18	n = 19: PEN, OXA, FOX, TET, CLI, ERY	mecA, blaZ/I/R, tetK/M, ermB	+	-	-	agrI	cap5
			H1, H4, H10, H15	n = 12: PEN, OXA, FOX, TET, CLI	mecA, blaZ/I/R, tetK/M	+	-	-	agrI	cap5
			H9	n = 1: PEN, OXA, FOX, TET, CLI, ERY, CIP	mecA, blaZ/I/R, tetK/M, ermB	+	-	-	agrI	cap5
			H17	n = 1: PEN, OXA, FOX, TET, CLI, ERY	mecA, blaZ/I/R, tetK/M, ermB	+	-	-	-	cap5

^aPEN: penicillin, OXA: oxacillin, FOX: cefoxitin, TET: tetracycline, CLI: clindamycin, ERY: erythromycin; CIP: ciprofloxacin
^bSelected resistance genes detected by DNA microarray (mecA, blaZ/I/R, ermB, tetK/M, aadD) or PCR (lnuB)
^c se: genes encoding staphylococcal enterotoxins

ISSN: 2047-2994