Table 3.
Within-school R0 results under different contact distance criteria. R0 values from transmission simulations across four different contact networks, using influenza transmissibility and disease progression time course assumptions derived entirely from data. R0 values were derived from averaging the expected number of transmissions from each initially infected individual across all simulations, with each student being assigned the initial infection 1000 times. Adjusted values were calculated by assuming that the contact network including all enrolled students would have the same density as the network of valid study participants, and that the average transmission probability per contact would be the same for the missing contacts including non-participants. The R0 values for each school under the 2 m distance criterion are more consistent with an independent estimate of 0.9 (95% CI 0.7, 1.1) for the within-school component of R0 during an influenza outbreak at an elementary school [34].
| contact distance criterion | Mid1 R0 (adjusted) | Elem1 R0 (adjusted) |
|---|---|---|
| 2 m | 0.79 (0.91) | 0.62 (0.87) |
| 1 m | 0.23 (0.26) | 0.22 (0.31) |