The outbreak linked to romaine lettuce killed one person and sickened at least 88 more, including a 9-year-old boy who nearly died of kidney failure.

An E. coli outbreak linked to romaine lettuce ripped across 15 states in November, sickening dozens of people, including a 9-year-old boy in Indiana who nearly died of kidney failure and a 57-year-old Missouri woman who fell ill after attending a funeral lunch. One person died.

But chances are you haven’t heard about it.

The Food and Drug Administration indicated in February that it had closed the investigation without publicly detailing what had happened — or which companies were responsible for growing and processing the contaminated lettuce.