Figure 5.

Weekly lethality rate (WLR) evolution in the overall pandemic. The WLR values were calculated applying a 1-week (black and grey), 2-week (red), and 3-week (green) shift between positive test and death in the time intervals W₂-W₃₃, W₃₄-W₄₁, and W₄₂-W₆₇, respectively. Values computed for the weeks (W₁₄-W₃₃, W₆₆-W₆₇) with less than 70 weekly-averaged deaths are in light grey. The average WLR value (2.56%) detected in the time interval W₃₄-W₄₉ is shown as a dashed line. The linear regression analysis of the WLR values in the weeks W₅₀-W₆₇ provides a correlation coefficient R=-0.95 (p-value<10^-5). The regression line (y = 7.4091 - 0.093675 x) is shown in red.