Volume 22, Number 9—September 2016
Research
Elevated Risk for Antimicrobial Drug–Resistant Shigella Infection among Men Who Have Sex with Men, United States, 2011–2015
Table 2
Differences in antimicrobial resistance phenotype by transmission route among clusters of Shigella infection, United States, January 2011–December 2015
Antimicrobial resistance phenotype | MSM-associated transmission, no. (%, 95% CI†), n = 7 | Transmission other than MSM-associated, no. (%, 95% CI†), n = 25 | p value‡ |
---|---|---|---|
CIP | 2 (29, 5–67) | 1 (4, 0.2–18) | 0.1 |
CRO | 2 (29, 5–67) | 0 (0, 0–11) | 0.04 |
AZM | 6 (86, 47–99) | 1 (4, 0.2–18) | <0.001 |
AZM, CIP, or CRO | 7 (100, 65–100) | 2 (8, 1.3–24) | <0.001 |
AZM and either CIP or CRO | 3 (43, 12–78) | 0 (0, 0–11) | 0.007 |
*AZM, azithromycin; CIP, ciprofloxacin; CRO, ceftriaxone; MSM, men who have sex with men.
†Mid-p exact 95% CI of the percentage resistant.
‡By 2-tailed Fisher exact test.