scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 4,568
11 HistoryMurray et al first described Listeria monocytogenes in 1926 These researchers isolated L monocytogenes as the etiological agent of sudden death of young rabbits in the animal-breeding establishment of the Department of Pathology of Cambridge England Murray et al 1926 In 1927 Pirie Pirie 1927 during investigations of unusual deaths verified in gerbils in South Africa isolated an identical bacterium The first documented human listeriosis case was reported in 1929 in Denmark and involved a soldier at the end of World War I Nyfeldt 1929 Allerberger 2002 After an increase in number of reports on Listeria isolations in late 70s and early 80s in 1983 was reported the first human listeriosis outbreak directly linked to the consumption of Listeria-contaminated food Schlech III et al 1983 Since then several epidemic outbreaks of listeriosis in humans occurred in North America and Europe implicated Listeria as a causative agent Farber and Peterkin 1991 and an important food-borne infection Vazquez-Boland et al 200112 Characteristics of the organismListeria spp are Gram-positive non spore-forming non-capsulated facultative anaerobic catalase positive oxidase negative bacteria with low GC content 36 to 42 closely related to members of the genus Bacillus Sallen et al 1996 Clostridium Enterococcus Streptococcus and Staphylococcus Vazquez-Boland et al 2001 Rocourt and Cossart 1997 At the time of writing this genus is composed of eight species Listeria monocytogenes Listeria ivanovii Listeria welshimeri Listeria innocua Listeria seeligeri Listeria grayi Vazquez-Boland et al 2001 Listeria marthii Graves et al 2009 and Listeria rocourtii Leclercq et al 2009 Although species of the genus Listeria are environmental bacteria Leclercq et al 2009 include both mammalian pathogenic species ie L monocytogenes a human and animal pathogen and L ivanovii an animal pathogen Orsi et al 2008L monocytogenes exhibits a range of temperature over which can grow -15 to 45C with optimal growth between 30C and 37C Gray and Killinger 1966 Bell and Kyriakides 2005 It grows under a wide range of pH stress ie 41
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA