5.18 Microbiology of Enterobacteriaceae: Escherichia, Salmonella, Shigella, Klebsiella, Proteus, Serratia, Enterobacter, and Citrobacter.

A collection of vocabulary flashcards covering key concepts related to Enterobacteriaceae, including characteristics, ecology, epidemiology, and prevention of infections.

Enterobacteriaceae

A large family of bacteria that includes genera such as Escherichia, Salmonella, Shigella, Klebsiella, Proteus, Serratia, Enterobacter, and Citrobacter.

Escherichia coli (E. coli)

Gram(-)
capsulated
motile
FAn

Human NMF: gut

Causes: gastroenteritis, urinary tract infections, meningitis.

Salmonella enteritidis

Gram(-)
motile
FAn
Capsule

Human NMF: none

Causes: salmonelosis

Shigella dysentheriae

Gram(-)
non-capsulated
non-motile
FAn

Human NMF: None

Causes: shigelosis, characterized by diarrhea, fever, and abdominal pain.

Klebsiella pneumoniae

Gram(-)
capsulated
non-motile
FAn

Human NMF: mouth, mouth, intestine

Causes: pneumonia, UTI.

Proteus mirabilis

Gram(-)
non-capsulated
motile
FAn

Human NMF: intestine

Urease- essential for colonization (kidney stone formation)

Causes: UTI (kidney stone formation), wound infections.

Enterobacter cloaceae

Gram(-)
capsulated
motile
FAn

Human NMF: intestines

Causes: nosocomial infection, including pneumonia and UTI.

Citrobacter freundii

Gram(-)
capsulated
motile
FAn

Human NMF: intestines

Causes: opportunistic infections, particularly in immunocompromised patients.

Serratia marcescens

Gram(-)
motile
FAn
capsule

Human NMF: intestines, URT

Causes: nosocomial infections, especially in immunocompromised patients.

Lactose fermenter

Bacteria that can ferment lactose, producing acid that can change the color of agar in culture media.

Nonspecific prevention and control

General strategies to prevent and control infections that do not target specific pathogens.

Multi-drug-resistance (MDR)

A term used to describe bacteria that are resistant to multiple antibiotics, complicating treatment.

Nosocomial infections

Infections acquired in hospitals or healthcare facilities.

Opportunistic infection

An infection caused by pathogens that take advantage of a weakened immune system.