Table 1.

List of resistance genes and their prevalence

Resistance gene	Antibiotic class	Resistance phenotype	Prevalence (%)
strA [aph(3’)-Ib]	aminoglycosides	STR	75.0
strB [aph(6’)-Id]	aminoglycosides	STR	75.0
aadAl	aminoglycosides	STR	9.2
aadA2	aminoglycosides	STR	9.2
aadA5	aminoglycosides	STR	2.6
aadA7	aminoglycosides	STR	1.3
aadA24	aminoglycosides	STR	1.3
aph(3’)-Ia	aminoglycosides	KAN	14.5
aac(3’)-VI	aminoglycosides	GEN	2.6
aac(3’)-IId	aminoglycosides	GEN	1.3
bla TEM-1	β-lactams	AMP	43.4
bla OXA-1	β-lactams	AMP	1.3
bla CMY-2	β-lactams	AMC, AMP, CRO, FOX, TIO	30.3
ampC (−42 T→C)	β-lactams	AMC, AMP, FOX	5.3
sul1	folate synthesis inhibitors	FIS	17.1
sul2	folate synthesis inhibitors	FIS	78.9
sul3	folate synthesis inhibitors	FIS	2.6
dfrA1	folate synthesis inhibitors	SXT	5.3
dfrA5	folate synthesis inhibitors	SXT	1.3
dfrA12	folate synthesis inhibitors	SXT	9.2
dfrA17	folate synthesis inhibitors	SXT	2.6
mphA	macrolides	AZM	1.3
floR	phenicols	CHL	68.4
cmlA	phenicols	CHL	2.6
catA1	phenicols	CHL	3.9
catB3	phenicols	CHL	1.3
qnrB2 a	quinolones	NAL, CIP	1.3
qnrB6 a	quinolones	NAL, CIP	1.3
qnrS2 a	quinolones	NAL, CIP	1.3
gyrA mutations	quinolones	NAL, CIP	27.6
parC mutations	quinolones	NAL, CIP	10.5
parE mutations	quinolones	NAL, CIP	3.9
tet(A)	tetracyclines	TET	71.1
tet(B)	tetracyclines	TET	22.4
tet(C)	tetracyclines	TET	21.1
tet(D)	tetracyclines	TET	19.7
tet(M)	tetracyclines	TET	9.2

STR, streptomycin; KAN, kanamycin; GEN, gentamicin; AMP, ampicillin; AMC, amoxicillin/clavulanic acid; CRO, ceftriaxone; FOX, cefoxitin; TIO, ceftiofur; FIS, sulfisoxazole; SXT, trimethoprim/sulfamethoxazole; AZM, azithromycin; CHL, chloramphenicol; NAL, nalidixic acid; CIP, ciprofloxacin; TET, tetracycline.

^aOnly confers reduced susceptibility.