Enterobacteriaceae

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Infectious Disease Epidemiology Section Office of Public Health, Louisiana Department of Health 800-256-2748 (24 hr. number) - (504) 568-8313 www.infectiousdisease.dhh.louisiana.gov Enterobacteriaceae Revised 6/21/2018 The Enterobacteriaceae are a large family of bacteria, including many of the more familiar pathogens, such as Salmonella, Shigella and Escherichia coli. Members of the Enterobacteriaceae are bacilli (rod-shaped), facultative anaerobes, fermenting sugars to produce lactic acid and various other end products. They are typically 1-5 μm in length and they have Gram-negative stains. Most have many flagella used to move about, but a few genera are non-motile. They do not form spores. Most members of Enterobacteriaceae have fimbriae involved in the adhesion of the bacterial cells to their hosts. The following is a partial list of Enterobacteriaceae. Those with an * are described in detail in their respective sections. Alishewanella Buttiauxella Grimontella Pectobacterium Salmonella * Yokenella Alterococcus Cedecea Hafnia Phlomobacter Samsonia Aquamonas Citrobacter Klebsiella * Photorhabdus Serratia Aranicola Cronobacter Kluyvera Poodoomaamaana Shigella * Arsenophonus Dickeya Leclercia Plesiomonas Sodalis Azotivirga Edwardsiella Leminorella Pragia Tatumella Blochmannia Enterobacter Moellerella Proteus Trabulsiella Brenneria Erwinia Morganella Providencia Wigglesworthia Buchnera Escherichia * Obesumbacterium Rahnella Xenorhabdus Budvicia Ewingella Pantoea Raoultella Yersinia * Epidemiology Many members of this family are a normal part of the gut flora found in the intestines of humans and other animals, while others are found in water or soil, or are parasites on a variety of different animals and plants. Antibiotic Resistance Genes Enterobacteriaceae have been found to harbor several antibiotic resistance genes. MCR 1 The "mobilized colistin resistance"(mcr-1) gene confers plasmid-mediated resistance to colistin, a polymyxin, and one of a number of last-resort antibiotics for treating infections. The gene is found in several species of the Enterobacteriaceae: Escherichia coli, Salmonella, Klebsiella Louisiana Office of Public Health – Infectious Disease Epidemiology Section Page 1 of 2 .

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