Elmer H. Marth & Elliot T. Ryser 
Listeria, Listeriosis, and Food Safety [PDF ebook] 

Since the second edition of Listeria, Listeriosis, and Food Safetywas published in 1999, the United States has seen a 40 percent decline in the incidence of listeriosis, with the current annual rate of illness rapidly approaching the 2010 target of 2.5 cases per million. Research on this food-borne pathogen, however, has continued unabated,