Earlier quoted context omitted.
> Context: Workers at the plant, which had been producing Johnson & Johnson and AstraZeneca vaccines, conflated the ingredients between the two different types of vaccines, destroying 15 million doses of Johnson & Johnson vaccine, according to the Times.
Jesus Christ, this shouldn't happen in a certified cGMP (food) facility let alone a pharmaceutical plant. HACCP would prevent this in any number of ways.
What makes them different is 1) there are ample checks in place to prevent mistakes from ever leaving the facility, and 2) there is process that reduces the chances of having it happen in the first place.
But all of these places will have incident logs of mistakes like this, along with corrective actions that change the procedures and make it less likely to happen a second time.