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Table 3 Resistance of serogroup 6 S. pneumoniae to several antimicrobials by CCs/STs

From: Population biology of 225 serogroup 6 Streptococcus pneumoniae isolates collected in China

CC/STs No. CXMa IPMa* ERYa* CHLa* TCYa SXTa MDRa(%)
I% R% I% R% R% I% R% I% R%
ST982 52 0 0 0 98.1 3.8 1.9 98.1 1.9 98.1 98.1
CC90 41 4.9 87.8 19.5 100 58.5 0 95.1 4.9 92.7 100
CC4542 25 0 0 8.0 96.0 8.0 0 100 4.0 88.0 92.0
ST2912 11 0 0 0 100 0 36.4 45.5 9.1 63.6 63.6
CC4536 15 6.7 0 0 66.7 46.7 0 100 20.0 46.7 73.3
CC2754 15 0 6.7 0 100 6.7 0 93.3 13.3 86.7 93.3
CC8616 10 0 0 10.0 90.0 10.0 0 90.0 0 90.0 90.0
CC386 10 0 0 0 100 0 10.0 80.0 0 10.0 40.0
Others 46 6.5 39.1 8.7 93.5 26.1 4.3 80.4 15.2 63.0 91.3
Total 225 2.7 24.4 6.7 95.1 21.8 3.6 90.2 7.6 78.7 89.8
  1. Note: All 225 strains were susceptible to amoxicillin–clavulanic acid, ceftriaxone, vancomycin, and levofloxacin.
  2. aCXM: cefuroxime; IPM: imipenem; ERY: erythromycin; CHL: chloramphenicol; TCY: tetracycline; SXT: sulfamethoxazole; MDR: multidrug resistance.
  3. *No intermediate or resistant isolate was identified.