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Table 1 Drug resistance patterns among 1326 tuberculosis patients in Hangzhou, China, 2015

From: Prevalence and patterns of drug resistance among pulmonary tuberculosis patients in Hangzhou, China

 

Type of TB resistance

New cases (N = 1020)

Treated cases (N = 306)

n

%

n

%

Resistance to any first-line drugs

184

18.0

112

36.6

Resistance to individual drugs in any tests

 Isoniazid

102

10.0

89

29.1

 Rifampin

57

5.6

78

25.5

 Ethambutol

15

1.5

23

7.5

 Streptomycin

119

11.7

58

19.0

 Ofloxacin

20

2.0

15

4.9

 Kanamycin

7

0.7

4

1.3

Resistance to single drug only

 Isoniazid

33

3.2

15

4.9

 Rifampin

15

1.5

8

2.6

 Ethambutol

2

0.2

0

0

 Streptomycin

57

5.6

10

3.3

 Ofloxacin

14

1.4

3

1.0

 Kanamycin

2

0.2

0

0

Resistance to two drugs

 Isoniazid+ethambutol

1

0.1

1

0.3

 Isoniazid+streptomycin

27

2.7

3

1.0

 Rifampin+ethambutol

1

0.1

0

0

 Rifampin+streptomycin

3

0.3

1

0.3

 Ethambutol+streptomycin

1

0.1

1

0.3

 Rifampin+ofloxacin

0

0

1

0.3

 Streptomycin+ofloxacin

2

0.2

1

0.3

 Isoniazid+ofloxacin

1

0.1

1

0.3

 Streptomycin+ kanamycin

1

0.1

0

0

 Isoniazid+rifampin

9

0.9

19

6.2

Resistance to three drugs

 Isoniazid+rifampin+ethambutol

0

0

6

2.0

 Isoniazid+rifampin+Streptomycin

16

1.6

24

7.8

 Ethambutol+streptomycin+ofloxacin

0

0

1

0.3

 Isoniazid+rifampin+ofloxacin

1

0.1

1

0.3

 Isoniazid+rifampin+kanamycin

1

0.1

0

0

 Isoniazid+ethambutol+ofloxacin

0

0

1

0.3

Resistance to four drugs

 Isoniazid+rifampin+ethambutol+streptomycin

8

0.8

10

3.3

 Isoniazid+rifampin+ethambutol+ofloxacin

0

0

2

0.7

 Isoniazid+rifampin+streptomycin+ofloxacin

1

0.1

1

0.3

 Isoniazid+rifampin+streptomycin+kanamycin

0

0

2

0.7

Resistance to five drugs

 Isoniazid+rifampin+ethambutol+streptomycin+ofloxacin

0

0

2

0.7

 Isoniazid+rifampin+ethambutol+streptomycin+kanamycin

1

0.1

0

0

Multi-drug resistance (MDR)

38

3.7

68

22.2

Extensive drug resistance (XDR)

 Isoniazid+rifampin+ofloxacin+kanamycin (or cycloserine)a

1

0.1

2

0.7

  1. aOf these 3XDR patients, two were resistant to kanamycin, and one to cycloserine