You can be "a little bit pregnant" when you're talking about large groups of people. Of the women in your country, how many are pregnant at any given time? It's probably "a little bit". Obviously someone is confusing a statistical sampling of 1 with the kind of volume Amazon must deal with.

I find it informative that a rare event such as this is being given so much press. If this was more routine, this wouldn't be news. Amazon seems to be doing better than 0.1% based on that alone.