Winchester Engineering&Analytical Center(WEAC),HFR-NE460,Office of Regulatory Affairs,US Food and Drug Administration,109 Holton Street,Winchester,MA 01890,USA;
MD DHMH Laboratories Administration,Division of Microbiology,Room 528,1770 Ashland Ave.Baltimore,MD 21205,USA;
Foodborne pathogens; Listeria monocytogenes; Listeria ivanovii; qPCR;