A traceback investigation by the FDA did not find a single, common source of blackberries linked to a hepatitis A outbreak.

E. coli tests of romaine fields where investigators traced contaminated lettuce did not turn up outbreak strains, so the FDA will move to an in-depth “root-cause” investigation for three outbreaks.

As the FDA awaits final results from extensive E. coli tests of romaine lettuce farms in one California growing region, it says outbreak illnesses are slowing, though two separate outbreaks have popped up.

The FDA warned people to avoid Cavi brand fresh, whole papayas after distributor Agroson’s LLC refused to initiate a recall.