NewzDonations to top US provider have dropped to four-year summer low with less than a day’s supply of type O positiveThe American Red Cross has declared the second-ever national blood supply crisis after blood donations fell to a four-year summer low.On Monday, the 145-year-old non-profit said that as the United States’ largest single provider of blood products, it now has less than one-day national supply of type O positive blood – the most commonly transfused blood. The American Red Cross just declared only its second national blood crisis ever — and blood banks have less than a day's supply of one key type. Here's what's happening, and how you can help.
Earlier this week, the Red Cross said it had less than a one-day supply of type O positive blood, which is "the most commonly transfused blood type."
Summary from source