There is a moment in nearly every birth story, the one mothers don’t often tell at dinner parties, when a nurse’s face changes for half a second, or a doctor asks for something in a tone that’s just a shade too even. Most of the time, it passes. The bleeding slows. The bag of blood nearby never gets used. Still, it’s there.
It’s always there, quietly, in case. Until it’s not.
This summer, for only the second time in its history, the American Red Cross declared a full national blood crisis. Type O reserves, the blood used in the most life-threatening emergencies, the blood delivery rooms reach for when a birth goes sideways, have fallen below a single day’s supply nationwide.
Nobody is talking about what that means for mothers and babies. So let’s talk about it.
Why type O matters the moment a birth turns
Postpartum hemorrhage causes roughly 11 percent of maternal deaths in the United States, and it is the single leading cause of death occurring on the actual day of birth. It can escalate in minutes.
A mother who is stable during delivery can lose a life-threatening volume of blood shortly after, often before anyone fully understands why. In those moments, there is no time to run a match. Clinicians reach for O negative, the universal donor type, because it’s the one blood type that can go into anyone immediately.
O positive, meanwhile, can be transfused into roughly 80 percent of patients and makes up about 60 percent of everything the Red Cross distributes nationwide, a supply that blood banks used to cushion with a five-day reserve. That cushion is gone. The national blood supply fell by roughly 25 percent in a single month this summer, even as hospitals pulled thousands more units a week than expected.
A single traumatic delivery, like a single car accident victim, can require dozens of units of blood. There is no substitute. As one blood bank medical director told me for a related piece, “we have no feasible alternatives to blood components” — donated blood is still, in 2026, the only thing standing between a hemorrhaging mother and catastrophe.
It isn’t only mothers
Newborns in the NICU are among the most fragile transfusion recipients in any hospital. Premature infants often need small, precise blood transfusions to survive their first days, and unlike adults, they have almost no margin for delay or substitution. A shortage that forces hospitals to ration and prioritize hits the smallest patients hardest, because there is no elective version of a NICU transfusion. It happens now, or the outcome changes.
Cesarean sections, too, are surgeries, and hospitals under blood strain have already begun the first line of defense: postponing elective procedures to preserve supply for true emergencies. A scheduled C-section is not usually classified as elective in the way a knee replacement is. Still, the broader strain on surgical blood reserves touches every corner of a maternity ward, from a routine delivery that turns complicated to a NICU transfer that needed matched blood an hour ago.
Part of what’s driving this shortage is almost mundane: high schools and colleges, which supply roughly 20 percent of the nation’s blood through campus drives, go dark every summer. Add extreme heat, poor air quality, and a wave of foodborne illness keeping even willing donors home, and you get the lowest summer donation total in four years, coming at the exact moment hospitals need more, not less.
The Red Cross says it isn’t fully resolved. Officials maintain that just three additional donors at each remaining blood drive nationwide could stabilize the supply.
I think about this every time I remember the hours after Rumi was born — how ordinary the room felt, how invisible the machinery of readiness was, right up until the moment it might not have been. Most mothers never need that bag of blood hanging quietly nearby. But many do. And right now, for the first time in years, it might not be there.
If you’ve given blood before, you’re eligible again sooner than you think. If you haven’t, a maternity ward somewhere is counting on you to find twenty minutes this week.
— Hollie
PLEASE CONSIDER A PAID SUBSCRIPTION TO HELP KEEP INDEPENDENT WRITING/JOURNALISM ALIVE. THANK YOU FOR YOUR SUPPORT.
Had no idea. Thanks for letting us know.