Live Breaking News & Updates on Outbreak investigation

brand names. among them, albertsons, ralphs and farm fresh. all of them from a producer called wright county egg in galt, iowa. the cartons are stamped with plant number 1026, 1413, or 1946. the voluntary recall of eggs from those plants started friday. with some stores reaching out directly to customers enrolled in their loyalty programs. >> hello, this call is from your local ralphs store with an important recall announcement. >> reporter: even though all the tainted eggs have now presumably been removed from grocery store shelves, millions of them are already in people's fridges. >> this outbreak could really be one of the largest linked to eggs that we've seen in 20 years. >> reporter: when an outbreak like this occurs, local health authorities become food detectives. >> this is shoe leather epidemiology. this is an outbreak investigation. >> reporter: in northern california officials noticed dozens became sick after eating a certain kind of custard pie. in southern california 12 people became ill after attending a

Eggs , All , Recall , Number , Cartons , Plants , Plant , Iowa , Albertsons , Ralphs , Wright-county-egg , Brand-names