Quality assurance.
D004196:Disease Outbreaks; D004782:Environmental Health; D005502:Food / Q000592:standards*; D005511:Food Handling / Q000592:standards; D005513:Food Inspection; D005525:Food-Processing Industry; D005517:Foodborne Diseases / Q000453:epidemiology; D006801:Humans; D006920:Hygiene; D007300:Insect Control; D011786:Quality Control; D012375:Rodent Control; D012478:Salmonella Food Poisoning / Q000517:prevention & control; D012499:Sanitation; D013202:Staphylococcal Food Poisoning / Q000517:prevention & control; D014481:United States