Region
|
Mutation in the 23S rRNA
|
Isolates number
|
MIC (μg/ml)
|
---|
Genotype I
|
Genotype II
|
ERY
|
AZM
|
LVX
|
TET
|
---|
Beijing
|
A2063G
|
30
|
4
|
128- > 256
|
2–32
|
0.125–1
|
0.016–0.125
|
None
|
1
|
16
|
< 0.008
|
< 0.008
|
0.125–0.5
|
0.032–0.125
|
Jilin, Jilin
|
A2063G
|
48
|
0
|
128- > 256
|
2–32
|
0.125–0.5
|
0.016–0.25
|
A2064G
|
1
|
0
|
> 256
|
2
|
0.5
|
0.125
|
Soochow, Jiangsu
|
A2063G
|
22
|
0
|
≥256
|
2–16
|
0.125–1
|
0.016–0.125
|
None
|
0
|
2
|
< 0.008
|
< 0.008
|
0.25–0.5
|
0.032
|
Jinan, Shangdong
|
A2063G
|
8
|
3
|
128- > 256
|
2–32
|
0.125–1
|
0.032–0.125
|
A2064G
|
1
|
0
|
256
|
2
|
0.5
|
0.032
|
None
|
1
|
9
|
< 0.008
|
< 0.008
|
0.125–0.5
|
0.016–0.125
|
Fuyang, Anhui
|
A2063G
|
6
|
0
|
> 256
|
4–16
|
0.125–0.5
|
0.032–0.125
|
None
|
0
|
2
|
< 0.008
|
< 0.008
|
0.25–0.5
|
0.032–0.125
|
Total
|
A2063G
|
114
|
7
|
128- > 256
|
2–32
|
0.125–1
|
0.016–0.25
|
A2064G
|
2
|
0
|
≥256
|
2
|
0.5
|
0.032–0.125
|
None
|
2
|
29
|
< 0.008
|
< 0.008
|
0.125–0.5
|
0.016–0.125
|
- The MIC of each agent was defined as the lowest concentration of each antibiotic that prevented the color change
- ERY erythromycin, AZM azithromycin, LVX levofloxacin, TET tetracycline