Dear Editor Listeria monocytogenes is a Gram-positive and facultative intracellular bacterial pathogen with two distinct lifestyles:saprophytic in the soil and parasitic in host cells (Freitag et al.,2009).L.monocytogenescan cause a foodboe infection characterized by bacteremia,meningoencephalitis,abortion or neonatal sepsis and a high case-fatality rate(Freitag et al.,2009).