IIRC the past few outbreaks have only been for romaine lettuce. Iceberg and green leaf seem to be have relatively fewer incidents, though I'm not sure if this i

IIRC the past few outbreaks have only been for romaine lettuce. Iceberg and green leaf seem to be have relatively fewer incidents, though I'm not sure if this is due to something about the supply source, the way it's used, or the way it's grown.