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Table 3 Prevalence of toxin genes, agr groups, and biofilm formation in S. aureus isolates from the two groups

From: Methicillin-resistant Staphylococcus aureus colonization of infectious and non-infectious skin and soft tissue lesions in patients in Tehran

  Infectious Group
N = 30
Non-infectious Group N = 75 χ2 P-Value MRSA
N = 59
MSSA
N = 46
χ2
P-Value
Total
N = 105
tsst-1 4(13.3%) 12(16%) .732 13(23.2%) 3(6.5%) .028 16(15.2%)
pvl 2(6.6%) 1(1.33) .138 0 3(6.5%) .047 3(2.8%)
Eta 3(10%) 11(14.6%) .525 7(11.8%) 7(15.2%) .616 14(13.3%)
etb 3(10%) 5(6.6%) .561 2(3.3%) 5(10.8%) .127 7(6.6%)
hlaα 12(40%) 47(62.6%) .034 38(64.4%) 21(45.6%) .055 59(56.1%)
psmα 20(66.6%) 46(61.3%) .609 38(64.4%) 28(60.8%) .710 66(62.8%)
agr I 11(36.6%) 41(54.6%) .096 25(42.3%) 27(58.6%) .097 52(49.5%)
agr II 9(30%) 14(18.6%) .205 10(16.9%) 13(28.2%) .164 23(21.9%)
agr III 4(13.3%) 8(10.6%) .698 11(18.6%) 1(2.1%) .008 12(11.4%)
agr IV 3(10%) 12 (16%) .427 10(16.9%) 5(10.8%) .377 15(14.2%)
S-biofilm 6(20%) 19(25.3%) .562 19(32.2%) 6(13%) .022 25(23.8%)
M-biofilm 15(50%) 44(58.6%) .419 24(40.6%) 35(76%) .000 59(56.1%)
W-biofilm 6(20%) 9(12%) .290 13(22%) 2(4.3%) .010 15(14.2%)
No-biofilm 3(10%) 3(4%) .231 3(5%) 3(6.5%) .757 6(5.7%)
  1. S strong, M moderate, W weak