EDISON - A salmonella outbreak linked to eggs has sickened hundreds of people in four states and possibly more.

Health officials are focusing their investigations on restaurants in California, Colorado, Minnesota and North Carolina. Suspicious cases have cropped up in five other states.

Wright County Egg of Galt, Iowa, has recalled nearly 32 million dozen-egg cartons after officials at the Centers for Disease Control and Prevention (CDC) detected an uptick in salmonella cases.

The new recall covers eggs branded as Albertsons, Farm Fresh, James Farms, Glenview, Mountain Dairy, Ralph's, Boomsma, Lund, Kemps and Pacific Coast and are marked with a three-digit code ranging from 136 to 229 and plant numbers 1720 and 1942, the company said.

The earlier recall covered the Lucerne, Albertson, Mountain Dairy, Ralph's, Boomsma, Sunshine, Hillandale, Trafficanda, Farm Fresh, Shoreland, Lund, Dutch Farms and Kemps brands that were marked with a three-digit code ranging from 136 to 225 and plant numbers 1026, 1413 and 1946.

The four-digit plant number begins with "P - " and is followed by the three-digit code.

To learn more about the health risks posed by the eggs, go to the following resources :

Food and Drug Administration Egg Safety Centers for Disease Control