TABLE 1—

Estimates of Eligible Blood Donors Before COVID-19 and as of December 2020: United States

Category	Amount
US population	328.2 million persons
Pre–COVID-19 estimates
Adjustment for exclusion factors (328.2 × 0.626)	205.4 million persons eligible to donate
Actual number of blood donors	8 million donors
Percentage of actual eligible blood donors (8 million/205.4 million)	3.9
COVID-19 estimates
Impact estimate (18 × 3.34)	60 million persons
Adjustment for exclusion factors (328.2–60 = 268.2 × 0.626)	167 million persons eligible to donate
Actual number of blood donors (167 × 0.039)	6.5 million donors
Percentage change in actual eligible blood donors ([6.5–8]/8)	19