Reserve Systems for Allocation of Scarce Medical Resources During the COVID-19 Pandemic

The Path From April 2020 to April 2021
      Before 2020, nearly all medical resource allocation frameworks were based on a priority system in which patients are rank-ordered based on various criteria, and scarce medical resources would be allotted according to this ordering. This rank order could depend on a single variable such as a severity-of-illness score or on multiple variables aggregated into a single ordering through some formula.
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