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Distribution of S. sonnei isolates in different pulsotypes at Dice coefficient of 50%
| Collection period | No. of isolates in PT50 pulsotype:
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Total | |
| 1986–87a | 15 | 4 | 0 | 0 | 1 | 0 | 4 | 1 | 2 | 3 | 3 | 1 | 34 |
| 1994–95 | 29 | 3 | 2 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 38 |
Mann-Whitney U test, P = 0.0007.
