This is a reasonable proposition in principle. But there are other admission criteria. For example, you might end up passing over a 30yo mother of two for a 85yo nursing home resident, just because all nursing home residents get vaccinated, while still having relatively large numbers of hospitalizations. From the UK covid reports (Table 4), notice how hospitalization raw numbers are majority vaccinated >50yo, with 5389 out of 9831 (55%) cases.

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