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| Days missed | Categorization of case (n = 23) |
|||
|---|---|---|---|---|
| Mild (n = 11) | Moderate (n = 8) | Severe (n = 4) | All | |
| Days missed from work or school (median)a | 2 | 21 | 159 | 28 |
| Range | 0–365 | 0–150 | 0–548 | 0–548 |
aSome patients were retired, and some illness occurred during school holidays.
