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Case Assignment by Birth Year Intervals
| Definite (%) | Probable (%) | Possible (%) | Asymptomatic (%) | Female (%) | |
|---|---|---|---|---|---|
| 1982–1987 | 120 (63) | 22 (12) | 41 (22) | 4 (2) | 2 (1) |
| 1988–1992 | 177 (75) | 22 (9) | 35 (15) | 0 (0) | 3 (1) |
| 1993–1997 | 157 (86) | 9 (5) | 16 (9) | 1 (1) | 0 (0) |
| 1998–2003 | 129 (85) | 7 (5) | 11 (7) | 3 (2) | 1 (1) |
| 2004–2009 | 30 (86) | 1 (3) | 1 (3) | 3 (9) | 0 (0) |
| All years (795) | 613 (77) | 61 (8) | 104 (13) | 11 (1) | 6 (1) |
