The FDA named a source of the diarrhea parasite outbreak. The saga isn't over.

Saurav Pandey Photography/Getty Images This post originally appeared in the Business Insider Today newsletter. You can sign up for Business Insider's daily newsletter here. Lettuce pray: We've found the source of the diarrhea parasite. On Thursday, the US Food and Drug Administration linked shredded iceberg lettuce supplied to Taco Bell restaurants in five states to an ongoing cyclosporiasis outbreak. Public health officials are warning customers not to eat shredded iceberg lettuce served at…