Fig. 3
From: Infection fatality rate and infection attack rate of COVID-19 in South American countries
Model fitting results for the 12 South American countries with the highest COVID-19 deaths (represented by panels a–l). The time-series plots for the weekly reported COVID-19 deaths are represented in red line with simulation median (in black) and the basic reproduction number, \({R}_{0}(t)\), in the dashed blue line. The shaded region represents the 95% confidence interval of the simulation. The panels a–l represents the infection attack rate (IAR) for the 12 countries, respectively, with \(\pi =\theta\), and \(n=9\). The resurgence of deaths in Brazil and Peru could be explained by the resurgence of \({R}_{0}(t)\) due to the emergence of new variants and relaxing of nonpharmaceutical interventions measures. Note that \(\pi , \theta\) and \(n\) represent proportion of mortality out of severe cases, ratio of severe cases out of all infected cases, and number of nodes, respectively. The COVID-19 confirmed cases and deaths data come from [64]