Fig. 1

Distribution of enrollment of participants and serology tests as a function of time. A Number of participants enrolled (blue line—upper pane), and number (red line—upper pane) and percent (green line—lower pane) of participants who seroconverted from April 4th 2020 to Jan. 9th 2021. By Jan 2021 roughly 10% of the serology cohort had seroconverted. B Number of positive and negative tests from April 4th 2020 to Jan. 9th 2021. The monthly test positive rate roughly reflects the rate of community transmission in the study cohort as a function of time. C Distribution of longitudinal tests following an initial positive result. Each dot represents an individual test plotted on the y-axis based on time since the first positive test (indicated as kit# 0 on the x-axis). As of Jan 4, 2021, 11 participants had completed 6 tests following an initial positive test. D Percent of positive tests as a function of time following initial seroconversion