Table 3.
Molecular characteristics of Staphylococcus aureus isolates causing bloodstream infections from 2013 to 2018.
| ST | Isolates,n | MSSA, n | MRSA SCCmec Type(n) | spa type(n) | Virulence factors(n) |
|---|---|---|---|---|---|
| 5 | 28 | 3 |
II (24) IV (1) |
t1818 (1),t2460 (9),t264 (2),t311 (3),t450 (1),t458 (1), t601 (1), t9353 (2), t9363 (4) t2460 (1) t450 (1), t179 (1), t548 (1) |
tst(21),sea(4),seb(1),sec(21),seg(24),seh(15),sei(22) tst(1), sec(1), seg(1), sei(1) sed(3), seg(3), seh(1),sei(3), sej(2) |
| 764 | 12 | 2 |
II (8) IV (2) |
t002 (8) t002 (2) t002 (2) |
tst(3),seb(2),sec(3), seg(8),seh(8),sei(8) tst(2), sec(2), seg(2), seh(2), sei(2) sec(1), sed(1), seg(2), seh(1), sei(2), sej(1) |
| 965 | 2 | 2 | t062 (2) | sea(1),seg(2),seh(2),sei(2) | |
| 3066 | 2 | 0 | II (2) | t5076 (2) | tst(2),sec(2),seg(2),sei(2) |
| 398 | 14 | 10 |
I (1) V (3) |
t034 (1) t034 (3) t571 (4),t034 (3),t1451 (1),t1184 (1), t18609 (1) |
None seh(1) seh(3) |
| 7 | 8 | 8 | t796 (4), t091 (3), t605 (1) | seh(5) | |
| 199 | 6 | 6 | t084 (2),t2325 (1),t279 (1),t346 (1),t803 (1) | seh(2) | |
| 1801 | 6 | 0 |
I (1) II (4) V (1) |
t037 (1) t030 (1),t037 (2),t421 (1) t459 (1) |
sea(1) sea(4), seh(2) sea(1) |
| 1921 | 6 | 6 | t164 (6) | sei(6),seh(3),seg(6) | |
| 6 | 5 | 5 | t9121 (1),t18586 (1),t1131 (1), t304 (1), t701 (1) | sea(5),sed(1),seh(1),eta(1) | |
| 188 | 5 | 5 | t189 (4),t4209 (1) | tst(1),sec(1),seh(4) | |
| 59 | 4 | 2 |
II (1) IV (1) |
t437 (1) t437 (1) t437 (1),t441 (1) |
sea(1) seb(1),seh(1) sed(1) |
| 1821 | 3 | 2 | V (1) |
t4549 (1) t4549 (2) |
None None |
| 2959 | 2 | 2 | t9353 (1),NT(1) | seg(2),sei(1) | |
| 1 | 2 | 2 | t127 (2) | sea(1),sec(1),seh(1) | |
| 217 | 2 | 0 | V (2) | t309 (2) | pvl(1), sei(2),seg(1) |
| 630 | 1 | 0 | V (1) | t2196 (1) | None |
| 946 | 1 | 1 | t437 (1) | seg(1),sei(1) | |
| 2315 | 1 | 1 | t11687 (1) | sec(1),seg(1),sei(1) | |
| 2872 | 1 | 1 | t6608 (1) | seh(1) | |
| 1281 | 1 | 1 | t3277 (1) | seg(1),seh(1),sei(1) | |
| 72 | 1 | 1 | t148 (1) | tst(1),seg(1) | |
| 683 | 1 | 1 | t148 (1) | sed(1),sej(1) | |
| 45 | 1 | 1 | t004 (1) | seg(1),sei(1) | |
| 1659 | 1 | 1 | t774 (1) | sed(1) | |
| 25 | 1 | 1 | t081 (1) | seb(1),seg(1),sei(1) | |
| 182 | 1 | 1 | t616 (1) | tst(1),seg(1),seh(1),sei(1) | |
| 2867 | 1 | 1 | t18585 (1) | None | |
| 858 | 1 | 1 | t18607 (1) | None |
ST, sequence type by multi-locus sequence typing; SCCmec, Staphylococcal cassette chromosome mec; spa, Staphylococcus protein A gene;
NT, not-typeable; None, no virulence gene detected.