Accessory gene regulator (agr) dysfunction was unusual in Staphylococcus aureus isolated from Chinese children

Table 3 Genotypic characteristics of MSSA isolates stratified by agr functionality

Genotype	No. of solates (%)	No. (%) of isolates		pvl positive [No. (%)]
Genotype	No. of solates (%)	Dysfunctional agr	Functional agr	pvl positive [No. (%)]
Total	58	2 (3.45)	56 (96.55)	17 (29.31)
Community-associated	31 (53.45)	1 (3.23)	30 (96.77)	12 (38.71)
Hospital-associated	27 (46.55)	1 (3.70)	26 (96.30)	5 (18.52)
MLST
5	5 (8.62)	0	5 (100.00)	0
7	5 (8.62)	0	5 (100.00)	1 (20.00)
22	12 (20.69)	1 (8.33)	11 (91.67)	12 (100.00)
25	6 (10.34)	0	6 (100.00)	1 (16.67)
398	10 (17.24)	1 (10.00)	9 (90.00)	1 (10.00)
Others^a	20 (34.48)	0	20 (100.00)	2 (10.00)
spa type
t002	4 (6.89)	0	4 (100.00)	0
t189	4 (6.89)	0	4 (100.00)	0
t309	11 (18.97)	0	11 (100.00)	11 (100.0)
t571	6 (10.34)	1 (16.67)	5 (83.33)	0
t701	4 (6.90)	0	4 (100.00)	0
Others^b	29 (50.00)	1 (3.45)	28 (96.55)	6 (20.69)
agr type
I	46 (79.31)	2 (4.35)	44 (95.65)	16 (34.78)
II	9 (15.52)	0	9 (100.00)	0
III	1 (1.72)	0	1 (100.00)	0
IV	1 (1.72)	0	1 (100.00)	0
NT^c	1 (1.72)	0	1 (100.00)	1 (100.00)
MLST-spa-agr type
ST5-t002-agr II	4 (6.90)	0	4 (100.00)	0
ST6-t701-agr I	4 (6.90)	0	4 (100.00)	0
ST22-t309-agr I	9 (15.52)	0	9 (100.00)	9 (100.00)
ST188-t189-agr I	4 (6.90)	0	4 (100.00)	0
ST398-t571-agr I	6 (10.34)	1 (16.67)	5 (83.33)	0
Others	31 (53.45)	1 (3.23)	30 (96.77)	8 (25.81)

^aThe other MLSTs were ST1 (1 isolate), ST6 (4 isolate), ST8 (1 isolate), ST15 (3 isolates), ST25 (6 isolates), ST59 (4 isolates), ST121 (1 isolate), ST188 (4 isolates), ST950 (1 isolate), ST1281 (1 isolate)
^bThe other spa types were t034 (3 isolates), t078 (2 isolates), t081 (1 isolate), t084 (3 isolates), t091 (2 isolates), t127 (1 isolate), t163 (1 isolate), t164 (1 isolate), t167 (1 isolate), t310 (1 isolate), t437 (2 isolates), t660 (1 isolate), t796 (2 isolates), t1062 (1 isolate), t1818 (1 isolate), t2092 (1 isolate), t4377 (1 isolate)
^cNot determined

ISSN: 1471-2180