Coexistence of β-Lactamases in Community-Acquired Infections in a Tertiary Care Hospital in India

Table 3

Comparison between isolation of AmpC-producing organisms by the cefoxitin-cloxacillin disk diffusion test (CC-DDS), E-strip test, and AmpC disk test.

Organism	AmpC producer by AmpC disk test	AmpC E-strip test	AmpC producer by cefoxitin-cloxacillin disk diffusion test (CC-DDS)
E. coli	29	32	32
Klebsiella pneumoniae	12	14	14
Citrobacter freundii	3	3	3
Citrobacter koseri	3	3	3
Enterobacter spp.	1	1	1
Total	48	53	53