Fig. 2

Weekly SARS-CoV-2 screening test positivity rate at SSD schools was not higher than community rates. SSD screening positivity rates (solid black line) compared to (1) asymptomatic pre-procedural test positivity at BJC Hospitals in St. Louis (7-day average) (gray dashed line) and (2) the Washington University in St Louis undergraduate student screening positivity (dotted line) during the same period