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| Date from outbreak recognition to date of enrollment of first patient (days) | Number of cases lost to enrollment (%) |
|---|---|
| March 13–16 (3) |
6/249 (2) |
| March 13–20 (7) |
37/249 (15) |
| March 13–23 (10) |
62/249 (25) |
| March 13–28 (15)a |
114/249 (46) |
| March 13–31 (18)b | 149/249 (60) |
aApproval from first local ethics review board bApproval from Health Canada
