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Volume 26, Number 4—April 2020
Synopsis

Decreased Susceptibility to Azithromycin in Clinical Shigella Isolates Associated with HIV and Sexually Transmitted Bacterial Diseases, Minnesota, USA, 2012–2015

Dana EikmeierComments to Author , Pamela Talley, Anna Bowen, Fe Leano, Ginette Dobbins, Selina Jawahir, Annastasia Gross, Dawn Huspeni, Allison La Pointe, Stephanie Meyer, and Kirk Smith
Author affiliations: Minnesota Department of Health, St. Paul, Minnesota, USA (D. Eikmeier, F. Leano, G. Dobbins, S. Jawahir, A. Gross, D. Huspeni, A. La Pointe, S. Meyer, K. Smith); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (P. Talley, A. Bowen)

Main Article

Table 1

Frequency of azithromycin zone of inhibition for Shigella isolates by species, Minnesota, USA, 2012–2015*

Inhibition zone, mm No. (%) isolates
S. sonnei, n = 559 S. flexneri, n = 125† S. boydi, n = 5 S. dysenteriae, n = 2
6 24 (4) 18 (14) 1 (20) 0
8 0 1 (0.8) 0 0
12 0 1 (0.8) 0 0
14 0 1 (0.8) 0 0
15 1 (0.2) 0 0 0
17 2 (0.4) 0 0 0
18 3 (1) 0 0 0
19 5 (1) 2 (2) 0 0
20 23 (4) 4 (3) 0 0
21–25 442 (79) 48 (38) 2 (40) 1 (50)
26–30 58 (10) 44 (35) 2 (40) 0
>30 1 (0.2) 6 (5) 0 1 (50)

*Decreased susceptibility to azithromycin is defined as no zone of inhibition (6 mm) by disk diffusion using a disk containing 15 µg of azithromycin.
†Decreased susceptibility to azithromycin is defined as a <15 mm zone of inhibition with a disk containing 15 µg of azithromycin.

Main Article

Page created: March 17, 2020
Page updated: March 17, 2020
Page reviewed: March 17, 2020
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