Our protocol at the time, I emphasize again, was a protocol we had confidence in because we felt it represented best practice at that time. Our program and protocol was that when we determined a positive listeria finding in the environment, we remediated or cleaned up the site where the data indicated we had a positive and then retested it in successive periods. When we got negative findings in successive periods we then assumed that positive finding was remediated and we closed the case.
On April 20th, 2009. See this statement in context.