A major egg recall has been expanded.

Wright County Egg of Iowa has increased the recall to 380-million eggs, or 32 million dozen-egg cartons – up from 228 million Wednesday over salmonella concerns.

The salmonella outbreak has sickened hundreds of people in four states, and possibly more.

Nearly 300 cases of illness in California, Minnesota and Colorado have been linked to the dangerous strain of salmonella, and health officials are now looking for links between the people infected by salmonella poisoning.

None of the recalled eggs was packaged in New York, but the eggs are shipped nationwide.

The eggs that are believed to be tainted were sold with 13 brand names: Lucerne, Albertson, Mountain Dairy, Ralph’s, Boomsma’s, Sunshine, Hillandale, Trafficanda, Farm Fresh, Shoreland, Lund, Dutch Farms and Kemp.

The egg cartons were packaged between May 16 and August 13 and stamped with one of three codes: P-1026, P-1413 or P-1946.

Consumers who believe they may have recalled eggs should return them to the store for a full refund, said the company.

The Centers for Disease Control and Prevention has estimated that the number of people sickened as a result of the salmonella outbreak could be in the thousands. During June and July, about 200 cases of the salmonella strain were reported weekly, four times normal levels.

(Source: NY1 / ABC News)