"After conducting their own investigation into a deadly outbreak of listeriosis, federal health officials confirmed Wednesday that the source was a San Antonio produce company temporarily shut down by the state.
Sangar Produce & Processing Co. had disputed earlier test results from the Texas Department of State Health Services that found listeria on cut celery, arguing that independent tests by a private lab on the same batches failed to find any contamination.
But the Food and Drug Administration said in a statement that it also found listeria bacteria — not only on celery, but also in several places in the building including work surfaces after a visit Oct. 14 and 15.
The strain of listeria was genetically matched to people sickened in the outbreak, the FDA statement said..."