| 要約: | At the conclusion of its first year, the dynamics of the COVID-19 pandemic are still fluid. Today’s global and regional numbers on incidence and mortality are outdated just a few weeks later. Effective SARS-CoV-2 vaccines are becoming available, but the exact timeline of their availability, in particular in low- and middle-income countries (LMICs), is still unclear. What has become clear, albeit not completely understood, is that many poorer countries have been hit less by the pandemic than high-income countries (HICs), even when accounting for underreporting related to more limited testing capacity (Figure 1). Many LMICs need to be commended for their generally faster public health responses at much earlier stages in their epidemics than their HIC counterparts. Also, likely because of the relatively younger population in LMICs than HICs, the estimated COVID-19 infection/fatality ratio is typically around two to three deaths per 1,000 infections in LMICs, contrasted to six to 10 deaths per 1,000 infections observed in HICs with older populations.
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