Temporal estimates of case-fatality rate for COVID-19 outbreaks in Canada and the United States

(A) Daily incidence of coronavirus disease 2019 (bars) and associated deaths (black line) in the United States, 2020. (B) Crude case-fatality rate (CFR) (dashed line) and adjusted CFR estimates (red line) from Feb. 28 to Apr. 20, 2020. The shaded area around the red line illustrates the 95% credible interval for the adjusted CFR. Boxplots show the range of adjusted CFR estimates when the probability of reporting was less than 0.5 (95% confidence interval 0.1–0.5). Boxes indicate interquartile range (IQR), and lines indicate extended range, from minimum (25th percentile − 1.5 IQR) to maximum (75th percentile + 1.5 IQR).