TABLE 1.

Biogroups and sources of strains used in this study

Species and biogroup	No. and sources of strains	Total no. of strains
C. sakazakii	3,a 2,b 39,c 3,d 4,e 2,f 2,g 3,h 4,i 4,j 5,k 48m	119
1	3,a 2,b 21,c 2,d 2,e 1,f 2,g 1,h 2,i 2,j 1,k 27m	66
2	12,c 1,d 2,e 2,h 2i, 1,j 3,k 17m	40
3	1,c 1,j 1m	3
4	3,c 1,f 1m	5
7	1m	1
8	2,c 1m	3
13	1k	1
C. malonaticus	2e	2
5	1e	1
9	1e	1
C. muytjensii	1a	1
15	1a	1
C. dublinensis	1,b 1,e 3,i 2m	7
6	1,b 1,e 1,i 1m	4
10	2,i 1m	3
C. turicensis	2,e 3,i 1l	6
16	2,e 3,i 1l	6
Total		135

^aAmerican Type Culture Collection (ATCC).

^bCzech Collection of Microorganisms (CCM).

^cEnvironmental isolates from food obtained at the Tianjin Entry-Exit Inspection and Quarantine Bureau, China.

^dEnvironmental isolates from food obtained at the Liaoning Entry-Exit Inspection and Quarantine Bureau, China.

^eChinese Academy of Inspection and Quarantine, Beijing, China.

^fEnvironmental isolates from food obtained at the Jilin Entry-Exit Inspection and Quarantine Bureau, China.

^gEnvironmental isolates from food obtained at the Neimenggu Entry-Exit Inspection and Quarantine Bureau, China.

^hEnvironmental isolates from food obtained at the Shenyang Entry-Exit Inspection and Quarantine Bureau, China.

ⁱEnvironmental isolates from food obtained at the Xinjiang Entry-Exit Inspection and Quarantine Bureau, China.

^jEnvironmental isolates from food obtained at the Guangdong Entry-Exit Inspection and Quarantine Bureau, China.

^kEnvironmental isolates from food obtained at the Hunan Entry-Exit Inspection and Quarantine Bureau, China.

^lEnvironmental isolates from food obtained at the Hubei Entry-Exit Inspection and Quarantine Bureau, China.

^mEnvironmental isolates from food obtained at the Beijing Entry-Exit Inspection and Quarantine Bureau, China.