Table 3.

Coexistence of bla genes with different 16S rRNA methylase genes in isolates phenotypically positive for β-lactamase

Positive for genes	n
β-Lactamase+armA	64
β-Lactamase+armA+rmt B	23
β-Lactamase+rmt B	10
β-Lactamase+rmt C	6
β-Lactamase+armA+rmt C	3
β-Lactamase+npmA	4
β-Lactamase+armA	4
β-Lactamase+armA+rmt C	1
β-Lactamase+armA+rmt B	1
armA only	4
armA+rmt B only	2
Positive for bla gene but no 16S rRNA detected but	66
No bla gene or 16S rRNA methylase gene detected*	30
Total	218

^*Negative isolates may attributed to presence of bla or methylase genes that were not analyzed in this study.