You can relax your vigilance now in avoiding romaine lettuce grown in Yuma, AZ. The last lettuce shipped from that area was April 16, and it is none of that product is still available in stores or restaurants as it has a 21-day shelf life. The CDC and FDA continue the investigation, but have pointed out that it is unlikely that one grower, processor, or distributor can explain the outbreak.
PositiveTip: Enjoy romaine lettuce along with a variety of other greens for good nutrition and health.