Table 3. Distribution of Azithromycin Minimum Inhibitory Concentrations (MICs) Among Neisseria gonorrhoeae Isolates, Gonococcal Isolate Surveillance Project (GISP), 2015–2019

Minimum Inhibitory Concentrations (µg/ml)
Year

≤0.030
n (%)

0.060
n (%)

0.125
n (%)

0.250
n (%)

0.500
n (%)

1.000
n (%)

2.000
n (%)

4.000
n (%)

8.000
n (%)

≥16.00
n (%)

Total
n

2015

349
(6.8)

475
(9.2)

1198
(23.3)

1793
(34.8)

980
(19.0)

219
(4.2)

80
(1.5)

32
(0.6)

9
(0.2)

12
(0.2)

5147

2016

247
(4.7)

357
(6.8)

1006
(19.1)

1827
(34.8)

1234
(23.5)

395
(7.5)

111
(2.1)

42
(0.8)

14
(0.3)

23
(0.4)

5256

2017

286
(5.7)

427
(8.4)

1241
(24.5)

2157
(42.6)

525
(10.4)

204
(4.0)

137
(2.7)

36
(0.7)

26
(0.5)

22
(0.4)

5061

2018

318
(6.2)

459
(8.9)

1354
(26.2)

1832
(35.5)

675
(13.1)

287
(5.6)

163
(3.2)

16
(0.3.)

25
(0.5)

31
(0.6)

5160

2019

371

(6.8)

428

(7.8)

1406

(25.7)

1920

(35.0)

632

(11.5)

442

(8.1)

229

(4.2)

24

(0.4)

9

(0.2)

19

(0.3)

5480

Note: Percentages represent row percentages