TABLE 2.

Virulence factor carriage^a

Virulence factor	% prevalence
	agr group I (n = 11)	agr group II (n = 50)	agr group III (n = 44)	agr group IV (n = 55)
Toxin gene carriage
expA	0	8	9	22**
expB	27	20	7*	4*
sec-canine	0*	2*	14	16
speta	100	100	100	100
siet	100	100	100	100
luk-S/F	100	100	100	100
se-int	100	100	100	100
Antimicrobial resistance and gene carriage
mecA	45	18*	34	42
Aminoglycoside	45	34	32	51
Beta-lactam	82	84	82	95
Chloramphenicol	0	4	9	4
MLS	45	18*	34	45
Tetracycline	55	36*	61	69
Trimethoprim	9*	12*	32	44
MDR	45	16*	34	47

^aA single asterisk (*) signifies that the members of the indicated agr group are significantly less likely to be carried; double asterisks (**) signify that the members of the indicated agr group are significantly more likely to be carried.