Catching this thread up since a lot has moved since mid-July. Links are to the primary pages.
The traceback isn't speculation anymore. FDA and CDC confirmed epi and traceback data pointing to shredded iceberg from Taylor Farms de Mexico, served at some Taco Bell locations. Taylor Farms initiated a recall on July 17 covering iceberg sourced from central Mexico (retail and foodservice), and it has expanded since. FDA's page: Investigation of Cyclospora Illnesses: Iceberg Lettuce, July 2026. CDC's: Cyclospora Outbreak Linked to Iceberg Lettuce. CDC reported the outbreak's first two deaths on August 3.
On the two different case numbers question from earlier in the thread: both numbers are real, they just count different things. State health departments report all cyclosporiasis cases, which includes the normal summer seasonal baseline that has nothing to do with this outbreak. CDC's outbreak count only includes cases epidemiologically linked to the exposure. Add in the reporting lag (CDC says it can take up to 6 weeks to link a case) and the state numbers will always run higher and earlier than the outbreak count. Neither number is wrong. They answer different questions.
The earlier point about speculation hurting brands is well taken. The official pages above are the only sources making causal claims, and they update in place as the investigation moves.
One question for the group, since this is a live test of something most of us only tabletop: for those receiving leafy greens, how fast could your trace-forward actually answer "did we receive affected lots"? Hours, or days? Iceberg is on the FTL, so this is basically a dry run of what FSMA 204's records are supposed to make routine by July 2028. Curious if anyone is treating it that way.