Figure 1. Average number of total secondary transmissions over 30 days (outside the index case patient's household) after a single introduction into a school.

This figure displays the average number of secondary transmissions over 30 days following a single case introduction into a school. Estimates include both transmission directly from the index case and that from secondary and tertiary cases. The top panel shows elementary schools, where children are assumed to be less susceptible and less infectious than adults, and the bottom panel shows high schools. Note that axes differ across rows. The x-axes vary the level in-school mitigation with “low” assuming minimal interventions and “high” assuming intensive interventions. A/B = hybrid. (This is not an estimate of the effective reproduction number [Rt], which is shown in Supplement Figures 9 and 10.)