200 million eggs? How many chickens must they have?

USA Today reports,

More than 200 million eggs are being recalled over fears of salmonella.

Rose Acre Farms of Seymour, Ind., is voluntarily recalling the eggs due to possible contamination with the bacteria.

According to the Food and Drug Administration, 22 illnesses have been reported so far.

The eggs were distributed from the farm in Hyde County, N.C., and reached consumers in Colorado, Florida, New Jersey, New York, North Carolina, Pennsylvania, South Carolina, Virginia, and West Virginia through retail stores and restaurants.

They were sold under the brand names Country Daybreak; Crystal Farms; Coburn Farms; Sunshine Farms; Glenview; Great Value; as well as at Walmart and Food Lion stores.

The egg recall is the largest in the United States since 2010, according to Food Safety News.

The recall involves eggs with the plant number P-105, with the Julian date range of 011 through 012 printed on either side of the carton or package.

Salmonella can cause serious and even deadly infections in children or elderly adults. Symptoms include fever, diarrhea, nausea, vomiting and abdominal pain.

Consumers who have purchased the eggs are urged to immediately discontinue use of the recalled eggs and to return them to the place of purchase for a full refund.

Go here to learn more about salmonella.