There is no such thing as a universal blood type
This concept was abandoned quite a long time ago. The universal donor used to be considered people with the first negative group.
Why are they no longer a universal donor❓
Since incompatibility of this blood group with others was still observed. Just quite rarely and these cases were not detected immediately.
And when the first ones were detected, they were not given proper importance👐🏻
-By Emmanuel Ametsikor