Table 3. Distribution of Azithromycin Minimum Inhibitory Concentrations (MICs) Among Neisseria gonorrhoeae Isolates, Gonococcal Isolate Surveillance Project (GISP), 2014–2018

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

2014

323
(6.3)

464
(9.1)

1077
(21.2)

1782
(35.0)

1086
(21.3)

236
(4.6)

50
(1.0)

37
(0.7)

28
(0.6)

10
(0.2)

5093

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

Note: Percentages represent row percentages