"A similar thing happened in New York back in the 60's- some moron nurses aide mixed up the baby formula using a cleaning powder instead of lactose, and killed something like 25 newborns in the nursery."
I think you are referring to an aide mixing up salt with sugar and yes, nine babies died and that incident took place in Binghamton, NY in the 60's....
Well, memory is fallible, mine more than most- but I will try to check this today (if I get time)- I seem to recall an incident in New York City itself (my original hometown), and that it was a cleaning powder (Borax???) that was stored on the shelf with the Lactose powder.
I'm sure that there have more of these incidents than either of us know about, though- and not just in hospitals. Especially since so many of the low-level hospital, restaurant, and hotel workers do not read or speak English.