Nature Biotechnology responds

Nature Biotechnology 25, 165–166 (2007); published online 7 February 2007; corrected after print 1 June 2007.

The following information was not available when this correspondence response was initially published. At a California Senate hearing held on Tuesday, February 28, 2007, California Department of Health Services officials, under direct questioning by Senator Maldonado, indicated that the outbreak of E. coli O157:H7 in spinach originated from an organic farm, contrary to the statements made by Craig Holdrege. The entire hearing can be found at http://www.calchannel.com/archive.php by looking under February 2007, 022807, “Food-Borne Illness”; the comments relating to the organic source of the outbreak occur ∼10 minutes into the hearing (after formalities). This addendum has been added to the HTML and PDF versions of the article.