Health

Blood donors needed as cold weather freezes U.S. supply

(HealthDay)—The U.S. blood supply is expected to drop to dangerously low levels as sub-zero weather in many parts of the country forces cancellation of crucial blood drives, American Red Cross officials warn.

Surgery

Mass shootings may trigger unnecessary blood donations

Mass shootings often trigger a sharp increase in blood donations for affected communities but more than 15 percent of the product intended to save lives could be discarded, according to a study released today in The Journal ...

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