Summary
Summary Enterobacteriaciae
- Module
- Nursing
- Institution
- Bangor University (BU)
It contains summary of enterobacteriaciae
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ENTEROBACTERICEAE, INTRODUCTION
• The Family Enterobacteriaceae is a large family of gram- negative bacteria.
• Many of them are rod ( bacilli) shape
• Facultative anaerobes or aerobes
• Fermenting sugars to produce lactic acid and other end products
• Possess a complex antigenic structure
• They produce variety of toxins and other virulence factors
• Motility if present is by means of peritrichous (lateral) flagella, except Shigella and Klebsiella which are non-motile.
• They are non-sporulating,
• Usually reduces Nitrate to Nitrite (distinguishes enteric bacteria from bacteria that reduce nitrate to Nitrogen gas, such
as Pseudomonas and many other oxidase-positive bacteria).
,• It includes 30 genera with more than 100 species.
• The family includes familiar pathogens like Salmonella,
Shigella, Escherichia coli , Klebsiella etc
• Most enterobacteria are found on human skin, plants, soil, water,
sewage, intestinal tracts of animals, including humans, dairy
products and clinical specimens such as:
• Urine
• Blood
• Faeces
• Sputum
• Wound exudates
, Lactose
• Lactose fermenters:
• Citrobacter
• Escherichia
• Enterobacter
• Klebsiella
Non lactose fermenter
• Shigella
• Yersinia
• Proteus
• Salmonella
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