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Table 4 The frequency of virulence genes among main types of S. aureus isolates and the comparison of two time periods

From: Molecular characteristics and virulence gene profiles of Staphylococcus aureus isolates in Hainan, China

Virulence genes S. aureus (n = 227)n(%) ST398 (n = 32)n(%) ST188 (n = 30)n(%) ST45 (n = 23)n(%) 2013–2014 (n = 91)n(%) 2018–2019 (n = 136)n(%) P valuea
pvl 108 (47.6) 26 (81.3) 11 (36.7) 4 (17.4) 25 (27.5) 83 (61.0) < 0.01
fnbA 87 (35.7) 7 (21.9) 7 (23.3) 10 (43.5) 33 (36.3) 54 (39.7) 0.601
fnbB 113 (49.8) 31 (96.9) 6 (20.0) 6 (26.1) 19 (20.9) 94 (69.1) < 0.01
hla 224 (98.7) 32 (100.0) 29 (96.7) 23 (100.0) 91 (100.0) 133 (97.8) 0.405
hlb 161 (70.9) 20 (62.5) 19 (63.3) 6 (26.1) 44 (48.4) 117 (86.0) < 0.01
sea 35 (15.4) 5 (15.6) 2 (6.7) 1 (4.3) 13 (14.3) 22 (16.2) 0.699
seb 108 (47.6) 11 (34.4) 18 (60.0) 8 (34.8) 35 (38.5) 73 (53.7) 0.024
sec 63 (27.8) 2 (6.3) 5 (16.7) 22 (95.7) 28 (30.8) 35 (25.7) 0.406
eta 130 (57.3) 24 (75.0) 14 (46.7) 22 (95.7) 21 (23.1) 109 (80.1) < 0.01
etb 43 (18.9) 10 (31.3) 6 (20.0) 3 (13.0) 0 (0.0) 43 (31.6) < 0.01
clfA 227 (100.0) 32 (100.0) 30 (100.0) 23 (100.0) 91 (100.0) 136 (100.0)
  1. aThe frequency of virulence genes of S. aureus isolates in 2013–2014 were compared with those in 2018–2019