Here is what the FDA has told the public thus far about the source of the 2018 Yuma Romaine Lettuce Outbreak that has sickened over 200 in the US and Canada and killed 5 in the US:

Eventually, at least for the 105 people who have hired us, we will fill in all the blanks.  I must admit as someone interested in food safety and transparency, having a lawyer in Seattle fill in the blanks that the FDA should is not how it should be.  The time has come for the FDA to reassess what are considered “trade secrets” or “confidential.”  FSIS did it a decade ago and the sky did not fall.