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And the common factors seems to be shredded lettuce as the source of exposure. And the FDA investigators have been able to isolate a single supplier of iceberg lettuce from Mexico that Taco Bell uses in locations where people ate that later fell ill. So news reports have named California based Taylor Farms as the supplier. And the FDA investigation includes collection of product samples for retesting and analysis. Meanwhile, Taco Bell has reported they'll discontinue using lettuce from the implicated supplier. And symptoms that be on both 2 to 14 days after consumption of contaminated food, just dropping. Water-redioreophyte, cramping, bloating, gas, loss of appetite. And without treatment illness can last for over a few days and several months. And treatment requires an antibiotic. And the parasite originates entirely from the human feces and the protein.