The agency says expedited traceback procedures will save time and prevent foodborne illnesses caused by contaminated ground beef.

Public health officials say pork sausage was tainted with Listeria.

Product may contain foreign materials.

No illnesses have been reported.

Food manufacturers had one year to comply with regulations.

Both companies stock prices have taken sharp hit since scandal broke.

McDonald's is resuming its full menu following meat scandal.

USDA will not declare antibiotic-resistant Salmonella strains adulterants.

USDA requiring two testing points and caps line speeds.

Salmonella Heidelberg outbreak linked to chicken lasted more than a year.