Lead-Tainted Applesauce Sailed Through Gaps in Food-Safety System

Cinnamon-flavored applesauce pouches sold in grocery and dollar stores last year poisoned hundreds of American children with extremely high doses of lead, leaving anxious parents to watch for signs of brain damage, developmental delays and seizures.

The Food and Drug Administration, citing Ecuadorean investigators, said a spice grinder was likely responsible for the contamination and said the quick recall of three million applesauce pouches protected the food supply.

But hundreds of pages of documents obtained by The New York Times and the nonprofit health newsroom The Examination, along with interviews with...