In a December 23rd release, the Centers for Disease Control announced an investigation into two apparently unrelated outbreaks of listeriosis attributed to packaged salads produced by Fresh Express and Dole respectively. 

The Fresh Express outbreak has so far affected ten consumers in eight states, all of whom have been hospitalized resulting in one fatality.  Fresh Express recalled various brands on December 20th including Simply Nature, Weiss Fresh from the Field, O-Organics and Giant Eagle.

The investigation implicating Dole packaged salads has identified 16 cases in 13 states with 12 hospitalizations and two fatalities.  The outbreak strain of Listeria has been identified in packages of salads produced and distributed by the company.  Brands that were recalled on December 22nd included Ahold, Dole, Kroger, Lidl, Nature’s Promise, and Simply Nature.

Investigations are in progress to identify the source of infection and to define the epidemiology of the outbreaks in order that preventive action can be implemented.