Antimicrobial resistance in Enterobacteriaceae from healthy broilers in Egypt: emergence of colistin-resistant and extended-spectrum β-lactamase-producing Escherichia coli

Table 6 Characterization of colistin-resistant and carbapenemase-producing E. coli isolates

Isolate	Governorate	Farm	O-antigen	H-antigen	Resistance genes	Virulence genes	Phenotypic resistance	mcr-1	MIC value	ESBL	Carbapenemase
16CS0744	Dakahliya	9	–	51	sul3, dfrA1, dfrA14, tetA, cmlA1, aadA1, aphA, mphA, mrx, bla_CMY, bla_TEM	cma, hemL, intl1, iroN	CIP, T/S, TET, RAM, GEN, STR, ERY, PEN, AMP, CAZ	+	≥ 4	Positive	Negative
16CS0078	Dakahliya	16/2	–	4	sul2, dfrA14, tetA, strB	hemL, intl1, iss	T/S, TET, RAM, STR, ERY, PEN	+	≥ 6	nd by VITEK	nd by VITEK
16CS0075	Kafr El-Sheikh	9	–	51	sul3, cmlA1, floR, aadA1, aphA, mphA, bla_TEM	cma, hemL, intl1, iroN, iss	CIP, TET, CMP, RAM, GEN, STR, ERY, PEN	+	≥ 32	Negative	Negative
16CS0775	Damietta	4	–	4	–	pic, vat, cma, hlyE, mchF, hemL, ireA, iroN, iss	TET, RAM, ERY, PEN	+	≥ 6	nd by VITEK	nd by VITEK
16CS0036	Damietta	6	–	21	–	hemL	RAM, ERY, PEN, AMC	+	≥ 4	nd by VITEK	nd by VITEK
16CS0747	Gharbiya	4	–	32	qnrS, sul3, tetA, cmlA1, floR, arr, aadA1, bla_OXA-7, bla_SHV, bla_TEM	hemL, intl1, ireA	T/S, TET, CMP, RAM, GEN, STR, ERY, PEN AMP, CAZ	−	nd	Positive	Positive

ISSN: 1757-4749