Northern Star Co. has begun a voluntary product recall of Simply Potatoes refrigerated potato products suspected of containing Listeria monocytogenes bacteria. Listeria is one of the most virulent food borne pathogens with 20 percent of clinical infections resulting in death.

T. Piekutowski European Style Sausage, a St. Louis, Mo., firm, has announced a 750 pounds of sausage recall that may be contaminated with Listeria monocytogenes, the U.S. Department of Agriculture's Food Safety and Inspection Service announced today.

University of Florida researchers have revealed how the inhaled form of anthrax paralyzes the body's defenses and prevents immune cells from reaching the site of infection.