Phenotypic and Genotypic Characterization of Extended Spectrum Beta-Lactamase-Producing Clinical Isolates of Escherichia coli and Klebsiella pneumoniae in Two Kenyan Facilities: A National Referral and a Level Five Hospital

Table 4

Proportion of ESBL-producing clinical isolates.

Isolate	ESBL trait	ELVH n (%)	KNH n (%)	value	Total (%)
E. coli	ESBL +ve	31 (91.2)	83 (79.8)	0.1919	114 (82.6)
	ESBL −ve	3 (8.8)	21 (20.2)		24 (17.4)
K. pneumoniae	ESBL +ve	12 (100)	106 (92.2)	0.5995	118 (92.9)
	ESBL −ve	0 (0)	9 (7.8)		9 (7.1)

ESBL: Extended-spectrum β-Lactamase; +ve: positive; −ve: negative; n: sample size; KNH: Kenyatta national hospital; ELVH: Embu level V hospital. The values in parenthesis are percentage proportions of E. coli and K. pneumoniae isolates producing or not producing ESBLs.