Table 4.
Population comparisons
| Measure | Adults | Health care workers | Students | Total |
|---|---|---|---|---|
| Population | 927 765 | 19 508 | 230 440 | 1 242 755 |
| Number infected throughout epidemic | 316 203 | 10 592 | 175 424 | 539 834 |
| Overall serologic attack rate | 34·1 | 54·3 | 76·1 | 43·4 |
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