Table 5. IncX plasmid types in qnrS1-positive isolates from Nigeria.

Strain	Resistance pattern	incX1	incX2	pilX2	pilX8	topB	qnrS1
09/5d	Amp Nal Str Sul Tet Tmp	-	-	-	-	-	+
09/9a	Amp Chl Nal Str Sul Tet Tmp	-	-	-	-	-	+
09/16e	Amp Chl Nal Str Tet Tmp	-	-		+		+
09/22a	Amp Chl Nal Str Sul Tet Tmp	+	+	+	+	+	+
09/22d	Amp Chl Nal Str Tet Tmp	+	-	+	+	+	+
09/24c	Amp Cip Chl Nal Str Sul Tet Tmp	-	-	-	-	-	+
09/18d	Amp Chl Nal Str Sul Tet Tmp	-	+	-	-	-	+
UMN206		+	-	+	+	+	-
DH5α		-	-	-	-	-	-