The American Red Cross has declared an emergency blood shortage, saying patients are at risk of not getting lifesaving transfusions.

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Donors are needed now more than ever as the Red Cross faces a national emergency shortage, with the number of donors at a 20-year low. Medical director Dr. Eric Gehrie says the Red Cross has experienced a loss of 300,000 donors since the COVID-19 pandemic alone.

“It means that hospitals will order a certain number of units of blood, and those orders are not being filled fully,” he said. “So hospital blood banks are low on blood.”