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Table 2 Distributions of resistance and virulence-related genes in GBS recovered from neonates and pregnant women, respectively

From: Phenotypic and genetic differences among group B Streptococcus recovered from neonates and pregnant women in Shenzhen, China: 8-year study

Resistance/virulence-related genes No. of isolates
EOGBS LOGBS NCGBS MCGBS
ERY and CLI resistance genesa
ermB 4 8 8 11
mefA/E    1 10
lnuB     1
ermB, mefA/E 1 2   6d
ermB, lnuB 3 6 2 5
mefA/E, lnuB   1   2
mefA/E, lnuD     6
ermB, mefA/E, lnuB     2
ermTR, mefA/E     1d
TET resistance genesb
TetO 1 4 5 9
TetM 1    37
TetS    1 1
TetO, TetM 8 11 4 2
TetM, TetS     1
TetO, TetM, TetL 1 2   1
TetO, TetM, TetK    1  
Virulence-related genesc
hylB     4
hylB, lmb   1 2 4
hylB, scpB    1  
hylB, lmb, scpB 9 15 3 44
hylB, lmb, bca     1
hylB, lmb, scpB, bac 1   4 4
hylB, lmb, scpB, bac, bca 2 1 2  
  1. ERY erythromycin, CLI clindamycin, TET tetracycline EOGBS early-onset GBS, LOGBS late-onset GBS, NCGBS neonatal colonizing GBS, MCGBS maternal colonizing GBS
  2. a 36 and 44 isolates of erythromycin and/or clindamycin resistant/intermediate GBS were detected in neonates and pregnant women, respectively
  3. b 39 and 51 isolates of tetracycline resistant GBS were detected in neonates and pregnant women, respectively
  4. c 41 and 57 isolates of GBS were detected in neonates and pregnant women, respectively
  5. d Inducible clindamycin resistance was detected in GBS isolate for each one, respectively