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| Respiratory | Mean number of cases per ZIP (range) | Mean duration of outbreak (in days) | Mean number of ZIPs | Number of injects |
|---|---|---|---|---|
| Overall | 2 (1–14) | 9.3 | 2.9 | 120 |
| Single day | 3 (1–14) | 1 | 2.7 | 24 |
| Point source | 2 (1–11) | 7.6 | 2.7 | 72 |
| Propagated | 2 (1–13) | 22.9 | 3.7 | 24 |
