Figure 2

Scatter plot of antibody measurements with overlaid linear regression lines showing temporal changes by prior infection status. Unadjusted (n = 1763 with 7376 data points). The blue line with blue dots represents individuals never infected with COVID-19. The red line with red dots represents the previously infected individuals. The dotted line indicates 1000 AU/mL as a reference. Model details, including intercepts, coefficients, and their corresponding 95% confidence intervals (CIs) are provided in the table below the figure.