FIGURE 1—

Timeline and Weighted Prevalence of SARS-CoV-2 Infection: REACT-1 Study, England, May 1, 2020–March 31, 2022

Note. REACT-1 = REal-time Assessment of Community Transmission-1. The figure shows the weighted prevalence of infection (black dots) and 95% credible intervals (vertical bars). P-spline model (black line) and 50% and 95% posterior credible intervals (dark and light gray shading) are fit to the data. Vertical gray–shaded areas represent “twin peaks” of Omicron BA.1 and Omicron BA.2 infections January–March 2022.

Source. Adapted from Elliott et al.⁷