New Delhi, June 26 -- MECHANICSVILLE, Md. - The label on the container said De Mi Pueblo. At farmers markets in Maryland and Virginia, the same cheese was sold as Kesso, as Quesos La Ricura, as Izalco. Whatever name the package carried, the sell-by date printed on some containers was June 24, yesterday. Federal health agencies confirmed this week that the soft, fresh cheese inside those containers has been linked to a Listeria monocytogenes outbreak that has killed one person and sent eight others to hospital across three states.

On June 18, the Centers for Disease Control and Prevention and the Food and Drug Administration confirmed that six samples of requeson, a fresh Hispanic-style whey cheese, collected from Clover Hill Dairy's faci...