TABLE 1.

Microbiological information for ST23-K1 isolates^a

Isolate ID	Collection date (yr/mo/day)	City	K locus	ST	KPC	Serum killing	String testb	IS element in wcaJ	ISKpn26	ISKpn74	rmpA	rmpA2	O-antigen serotype	O type	rmpD type
NTUH-K2044		Taiwan	KL1	ST23		Resistant (grade 6)	+		−	+	+	+	O1/O2v2	O1	2
C1356	2015/2/7	Beijing	KL1	ST23	KPC-2	Resistant (grade 6)	−	ISKpn26	+	+	+	+	O1/O2v2	O1	3
C2768	2017/2/20	Guangzhou	KL1	ST23		Resistant (grade 6)	−	ISKpn74	−	+	+	+	O1/O2v2	O1	3
C400	2015/2/10	Beijing	KL1	ST23	KPC-2	Resistant (grade 6)	−	ISKpn26	+	+	+	+	O1/O2v2	O1	3
C4599	2017/9/12	Kunming	KL1	ST23	KPC-2	Resistant (grade 6)	−	ISKpn26	+	+	+	+	O1/O2v2	O1
C228	2014/7/4	Nanjing	KL1	ST23	KPC-2	Intermediate (grade 4)	−		−	+	−	+	O1/O2v2	O1	26
C4120	2017/6/9	Zhengzhou	KL1	ST23		Intermediate (grade 4)	+		−	+	+	+	O1/O2v2	O1	2
C1908	2016/12/19	Kunming	KL1	ST23		Sensitive (grade 2)	+		−	+	+	+
C2362	2017/2/19	Beijing	KL1	ST23		Sensitive (grade 2)	+		−	+	+	+
C787	2016/3/27	Shenzhen	KL1	ST23	KPC-2	Sensitive (grade 2)	+		−	+	+	+
C1922	2016/2/10	Tianjin	KL1	ST23		Sensitive (grade 1)	−		−	+	+	+
C1928	2016/3/1	Tianjin	KL1	ST23		Sensitive (grade 1)	−		−	+	+	+

^aValues for rmpD represent rmpD typing (15); classification of the O locus was according to Kaptive (16, 37). ST, sequence type. +, positive; −, negative.

^bResults for string test.