Table 2. Distribution and combinations of β-lactamase genes in 106 E. coli identified from 47 German pig farms.

β-lactamase gene	No. of isolates (% of 106 E. coli isolates)
CTX-M-1 like	46 (43.4)
CTX-M-1 like + TEMnon-ESBL	27 (25.5)
CTX-M-15 like	7 (6.6)
CTX-M-15 like + TEMnon-ESBL	4 (3.8)
CTX-M-15 like + OXA-1 like	1 (1)
CTX-M-15 like + TEMnon-ESBL+OXA-1 like	3 (2.8)
CTX-M-9 group	6 (5.7)
CTX-M-9 group + TEMnon-ESBL	7 (6.6)
CTX-M-9 group + TEMnon-ESBL +OXA-1 like	2 (1.9)
CMY-II + TEMnon-ESBL	2 (1.9)
TEMnon-ESBL	1 (1)