In its article Nationwide E. coli breakout affects bagged spinach the Statesman Journal reports on the confirmed E. coli case in Salem, Oregon. From the article:

Wellborn’s illness was traced back to a package of Dole baby spinach, according to her family and her attorney. The law firm of Marler Clark in Seattle, which has a practice dedicated to representing victims of food poisoning, has filed a personal injury action lawsuit on Wellborn’s behalf in the United States District Court in Portland.

Dr. Keene said that multiple brands have been named in the confirmed cases. "We are not pointing at a single source unambiguously," Dr. Keene said. "Dole is one of the companies on the radar."