Genetic diversity of livestock-associated MRSA isolates obtained from piglets from farrowing until slaughter age on four farrow-to-finish farms

Table 2 Example of the molecular typing results of all isolates obtained from two sows (sows 1 and 9) and two piglets (pig 6 originating from sow 1 and pig 88 originating from sow 9) from farm C

Origin	Sampling event(s) (days after farrowing)	SCCmeccassette type	MLVA numeric code^a	MLVA cluster or type	Pulsotype
Sow 1	d1	IV	33-55-35-1-3	127	I
	d3	V	33-57-37-6-3	B	I
	d5	IV	33-53-34-8-4	171	I
	d17	V	33-57-36-6-3	1	I
Pig 6	<d1, d1, d54, d88	V	33-57-37-7-3	B	I
	d3	V	33-57-36-7-3	B	I
	d7	V	31-53-35-6-3	152	I
	d5, d17, d33	V	34-59-38-8-4	D	I
	d21	IV	34-57-34-7-3	C	VII
Sow 9	<d1	IV	32-53-34-4-3	155	V
Pig 88	<d1	IV	35-48-35-8-4	E	I
	d1	IV	34-47-34-7-3	C	IV
	d3, d5, d17	IV	34-47-34-7-3	C	I
	d7	IV	34-47-33-7-3	36	I
	d21	IV	35-59-35-8-4	E	I
	d33	V	33-57-37-7-3	B	I
	d54, d88	V	34-59-38-8-4	D	I
	d172	V	26-59-38-8-4	139	I

^aVNTR code of the repeat region of the 5 genes clf A, clf B, sdr C, sdr E, and SIRU21.
All isolates belonged to spa type t011. The origin, sampling event, SCCmec cassette type, the MLVA numeric code, MLVA cluster or MLVA type number in case of a non-clustered MLVA type, and pulsotype is given for all isolates of each animal. Isolates (originating from the same animal at different sampling events) with the same characteristics were grouped together).

ISSN: 1297-9716