Article
What is happening
On July 27, the Red Cross said donations had fallen to a four-year summer low and that it held less than a one-day national supply of type O positive blood, the type most often transfused. It has begun capping type O distributions to individual hospitals. The only other time the organization declared a national crisis was January 2022.
The Red Cross pointed to higher hospital demand during the summer trauma season, along with extreme heat, poor air quality and widespread foodborne illness that kept donors away. It supplies about 40% of the nation’s blood. On July 24, the AABB task force on domestic disasters urged eligible donors to book appointments as soon as possible, and on July 28 the AHA issued a member advisory with resources to help.
Why this is an operations issue
Type O accounts for roughly 60% of Red Cross distributions, and type O positive can be given safely to about 80% of patients. Type O negative is what trauma teams reach for when there is no time to type and cross-match. When those units are rationed, the effects reach the emergency department, the operating room, labor and delivery, oncology and transplant.
The Red Cross notes that hospitals schedule about 65% of their expected blood needs in advance. That leaves limited room to absorb a sudden spike in demand while supply is constrained.
A checklist for the next two weeks
- Activate your shortage plan. Convene transfusion medicine, nursing, surgery and supply leaders daily, and set trigger points for each inventory level.
- Tighten patient blood management. Reinforce restrictive transfusion thresholds, single-unit orders and review of outlier ordering.
- Protect type O negative. Reserve it for emergencies and patients who truly need it, and review use of type O positive in place of type O negative where clinically appropriate.
- Review the surgical schedule. Identify elective cases with high expected blood use and decide in advance which could be postponed if inventory falls further.
- Host a drive. Hospitals are trusted community voices. Staff and community drives, promoted through your channels, add supply quickly. The Red Cross says three more donors per drive would help stabilize supply.
Archive entry for Jul 28, 2026, added Nov. 11, 2026.

