Cluster group

Total number of strains

Strain codes

I

6

1, 10, 49,

25, 33, 24

II

10

11, 12, 13, 14,

15, 16, 18, 19, 20, 17

III

18

2, 3, 4, 5, 21, 26,

27, 31, 32, 41, 42,

43, 44, 45, 38, 53, 6, 29

IV

16

37, 40, 48, 22,

23, 28, 30, 35, 50,

51, 55, 56, 7, 8, 9, 54

V

10

34

36, 39

46, 47, 52

57, 58, 59, 60