Table 1.

Strain information used in this study.

ID	Serial no. in this study	Isolation date	Prefecture	stx subtype	MLST
121512	1	2008-07-24	Okayama	2a	655
132137	2	2013-09-27	Shiga	2a	655
140452	3	2014-03-13	Niigata	2a	655
140961	4	2014-06-28	Gumma	2a	655
140990	5	2014-06-25	Ishikawa	2a	655
141004	6	2014-06-30	Chiba	2a	5536
141202	7	2014a	Shizuoka	2a	655
141247	8	2014-07-30	Osaka	2a	5536
141341	9	2014-07-09	Hiroshima	2a	655
141544	10	2014-07-24	Gumma	2a	655
142136	11	2014-08-29	Miyagi	1a,2a	655
142321	12	2014-08-27	Kagoshima	2a	655
142478	13	2014-10-09	Yamagata	2a	655
142676	14	2014-12-01	Osaka	2a	655
142774	15	2014-12-04	Fukuoka	2a	655
150151	16	2014-12-03	Ibaraki	2a	655
150152	17	2015-01-13	Ibaraki	2a	655
150174	18	2014-08-25	Fukuoka	2a	655
150213	19	2014-12-11	Shizuoka	2a	655
150238	20	2014-12-07	Miyagi	2a	655
150239	21	2014-12-17	Miyagi	2a	655
150240	22	2014-12-22	Miyagi	2a	655
150241	23	2014-12-19	Miyagi	2a	655
150242	24	2014-12-19	Osaka	2a	655
150243	25	2014-12-24	Osaka	2a	655
150281	26	2014-12-15	Nara	2a	655
150337	27	2015-01-28	Nagano	2a	655
150338	28	2015-01-28	Nagano	2a	655
150339	29	2015-01-31	Nagano	2a	655
150340	30	2015-01-31	Nagano	2a	655
150341	31	2015-02-01	Nagano	2a	655
150342	32	2014-06-30	Kanagawa	2a	655
150373	33	2014-12-19	Yamagata	2a	655
150375	34	2014a	Tokyo	2a	655
150376	35	2014a	Tokyo	2a	655
150387	36	2014-12-24	Aomori	2a	655
150393	37	2014a	Shizuoka	2a	655
150395	38	2015a	Hyogo	2a	655
150400	39	2014-12-10	Miyazaki	2a	655
150542	40	2014-12-26	Okayama	2a	655
150616	41	2015-03-31	Yamagata	2a	655
150977	42	2015-05-21	Kagawa	2a	655
151171	43	2015-06-17	Kanagawa	2a	655
151387	44	2015-07-21	Kanagawa	2a	655

^aIsolation date is not available.