| Period of Isolation | No. (%) | No. (%) | |
|
|
| NARR | CIPR |
| 2006 | 9 | (20.45) | 0 |
| 2007 | 8 | (28.57) | 1 (1) |
| 2008 | 7 | (41.17) | 0 |
| 2009 | 6 | (54.54) | 0 |
| Total | 30 (30) | 1 (1) | |