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Table 2 Detection of erythromycin-resistance genes for 135 erythromycin-resistant pneumococcal isolates

From: Molecular characteristics of erythromycin-resistant Streptococcus pneumoniaefrom pediatric patients younger than five years in Beijing, 2010

Macrolide-resistance genes No. (%) Age group MICs (μg/mL) distribution (No.) MIC range (μg/mL)
ermB mef 0 to 2 years 2 to 5 years 3 12 >256
+ + 41 (30.4%) 18 (13.3%) 23 (17.1%) 1 1 39 3- > 256
+ - 94 (69.6%) 36 (26.7%) 58 (42.9%)    94 >256