Multistate Outbreak of Listeriosis Linked to Imported Marte Brand Frescolina Ricotta Salata Cheese

As of September 26, 2012, a total of 18 persons infected with the outbreak-associated strain of Listeria monocytogenes have been reported from 12 states and the District of Columbia. All 18 ill persons were hospitalized. Three deaths have been reported. Listeriosis contributed to at least one of these deaths. One fetal loss has been reported. Collaborative investigation efforts of local, state, and federal public health and regulatory agencies indicate that imported ricotta salata cheese is the likely source of this outbreak. On September 14, 2012, Forever Cheese, Inc. issued an expanded recall of all lots and production codes cheese and issued a market withdrawal of all cheeses they received that were produced by the Italian cheese maker. Marte brand Frescolina ricotta salata cheese may also have been referred to as Ricotta Frescolina Marte Tipo Toscanella or Ricotta Salata Soft (lot number T9425) during distribution. Labeling of the recalled ricotta salata cheese after it was cut and repackaged has been inconsistent. Be aware that labels of repackaged cheese may not include the words Marte or Frescolina. Consumers who purchased recalled Marte brand Frescolina ricotta salata cheese are advised not to eat it and to discard any remaining cheese. This is especially important for pregnant women, persons with weakened immune systems, and older adults.