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Egg recall has people asking whether other types of eggs, such as free range or pasteurized, are a better choice.

On the heels of the latest egg recall, salmonella concerns are at an all-time high. More than 500 million eggs from Iowa's Hillandale Farms and Wright County Egg have been recalled in the nationwide investigation of a salmonella outbreak. The outbreak has sickened more than 1,000 people.

Consumers have been there, done that. Since 2006, they’ve faced other deadly outbreaks from tainted spinach, peppers, peanuts, pistachios, tomatoes, and salami. This week, Wal-Mart pulled potentially contaminated deli meats from its cases.

Salmonella enteritidis is a common bacterium found inside perfectly normal-looking eggs. If eggs are eaten raw or undercooked, it can cause illness including abdominal cramps, diarrhea, fever, and vomiting within 12-72 hours. Most people recover without treatment, but infants, the elderly, and those with weak immune systems are at risk for serious illness.

When it comes to eggs, tougher rules are finally on the books for the biggest producers. In July, The FDA set in place mandatory inspection of hen houses of more than 50,000 birds. They’re required to test both houses and eggs for salmonella. If it’s found, they must report it and pull eggs from production. Smaller farms have until 2012 to comply.

“Most producers follow voluntary and mandatory guidelines to make sure that what they’re providing on the farm goes into a safe quality product for the consumer,” says Krista Eberle, director of Food Safety Programs at the American Egg Board.

But just how can you tell what you're buying, when you're shopping for eggs? What do terms like cage-free, free-range, organic, and others mean?  

Cage-Free Eggs

Cage-free eggs are eggs from birds that are not raised in cages, but in floor systems usually in an open barn. The hens have bedding material such as pine shavings on the floor, and they are allowed perches and nest boxes to lay their eggs.  However, they may still be at close quarters with many other hens -- just not in cages. That depends on the farm.

Free-Range Eggs

Free-range eggs are laid from hens that have the opportunity to go outside. Smaller farms may keep birds outside under a canopy area. They may travel in and out of a barn at free will or spend some portion of their day roaming outdoors. 

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