Citrobacter is a genus of Gram-negative, aerobic, rod-shaped [2] coliform bacteria of the Enterobacteriaceae family. Citrobacter spp. cause opportunistic infections (including urinary tract infections , gastroenteritis , and bacteremia).

2023年5月19日 · Citrobacter infection is a rare and third most common organism causing urinary tract infection and is highly resistant to many antibiotics. These organisms spread through the hands of hospital staff members, environmental sources, or carriers of family members.

The author reports the emergence of Citrobacter as a common urinary pathogen in hospitalized patients. The genus Citrobacter was discovered in 1932 by Werkman and Gillen. These organisms are found in soil, water, intestinal tract of animals, and in human clinical samples.

Organisms of the genus Citrobacter are gram-negative bacilli that are occasional inhabitants of the gastrointestinal tract and are responsible for disease in neonates and debilitated or immunocompromised patients.

Members of the genus Citrobacter are named for their ability to use citrate as their sole carbon source. Of the dozen species, Citrobacter freundii, Citrobacter koseri (formerly Citrobacter diversus), and Citrobacter amalonaticus are linked to human disease.

Citrobacter species are enteric gram-negative bacilli. They are normal human gut flora. They are mostly a nosocomial pathogen found in compromised hosts, patients over 60 years of age, and in neonates.

2023年12月4日 · Citrobacter spp. are Gram-negative, non-spore forming, rod-shaped, facultative anaerobic bacteria from the Enterobacteriaceae family often found in soil, sewage, sludge, water, food, and the intestinal tracts of animals and humans.

Citrobacter spp. urinary tract- and bloodstream infections were most frequently reported, with Citrobacter freundii being the main causative species. Hospital-acquired infection occurred in 85% (838/990) of hospitalized patients with Citrobacter infection.

2021年1月1日 · Members of the genus Citrobacter are Gram-negative, nonsporeforming rods belonging to the family Enterobacteriaceae and, as the name suggests, usually utilize citrate as a sole carbon source. These facultative anaerobes typically are …

2025年1月19日 · Citrobacter koseri is a bacterium known for causing serious infections, particularly affecting the central nervous system. It is associated with conditions such as meningitis and brain abscesses, especially in vulnerable populations like neonates and immunocompromised individuals.