No abstract available.
Citrobacter freundii* ; Citrobacter* ; Osteomyelitis*

No abstract available.
Citrobacter freundii* ; Citrobacter* ; Osteomyelitis*

No abstract available.
Citrobacter* ; Enterobacter*

No abstract available.
Citrobacter freundii* ; Citrobacter* ; Humans ; Infant, Newborn* ; Meningitis*

No abstract available.
Abscess* ; Citrobacter koseri

No abstract available.
Abscess* ; Citrobacter* ; Humans ; Paronychia*

Citrobacter species is a gram-negative bacilli that can cause opportunistic infections in immunocompromised hosts. Citrobacter braakii refers to the genomospecies 6 of the Citrobacter freundii complex. There are no detailed studies on infections caused by this newly identified specific genetic species in Korea. We herein report a case of a patient with hepatocellular carcinoma who, after undergoing transcatheter arterial chemoembolization, developed biloma which later progressed to C.braakii sepsis and did not respond to treatment. To our knowledge, this is the first reported case in Korea on C. braakii infection resulting in septic shock in a patient with malignancy in Korea.
Carcinoma, Hepatocellular ; Citrobacter ; Citrobacter freundii ; Humans ; Immunocompromised Host ; Korea ; Opportunistic Infections ; Sepsis ; Shock, Septic

Citrobacter freundii is frequently isolated in antimicrobial-resistant nosocomial infections. Many strains of Citrobacter freundii are capable of producing an inducible broad-spectrum beta-lactamase. We report a case of an abdominal aortic aneurysm infected with Citrobacter freundii. A 55-year-old woman presented with acute lower back pain. Contrast enhanced computed tomography revealed a saccular aneurysm of the infrarenal abdominal aorta, with impending rupture. She underwent emergency surgery, during which a segment of aneurysmal aorta and infected tissue were completely removed and an in situ graft was placed for vascular reconstruction. The anastomotic site and inserted graft were wrapped with greater omentum. Citrobacter freundii was isolated by tissue culture from the resected aneurysmal wall.
Aneurysm ; Aorta ; Aorta, Abdominal ; Aortic Aneurysm, Abdominal ; beta-Lactamases ; Citrobacter ; Citrobacter freundii ; Cross Infection ; Emergencies ; Female ; Humans ; Low Back Pain ; Middle Aged ; Omentum ; Rupture ; Transplants

We shall devide the specific types of conjunctivitis into four main categories: (1) infectious conditions, (2) allergic conditions, (3) irritative conditions, and (4) inflammations occuring in association with diseases of the skin and mucous membranes. Bacterial conjunctivitis is the most common types of infections conjunctivitis. The common causes of bacterial conjunctivitis are Moraxella, Hemophillus, Staphylococcus, Streptococcus, Pneumococcus, Gonococcus, Corynebacterium diphtheriae. The genus citrobacter is closely related to the Salmonella-Arizona group of Entrobacteriaceae. They are usually recovered as commensals or as secondary pathogens from patients with altered host defences. The most commonly involved sites are the urinary and respiratory tracts. A 6 month old Korean male was found to hyperacute conjunctivitis OU which had developed for about 15days. Citrobacter freundii was recovered from the conjunctival exudate through smear, culture and biochemical study. Beside his conjunctivitis OU, this child was physically healthy and not found to have immunodeficiency. The conjunctivitis was treated and recovered with topical 0.5% Gentamycin and amoxycyillin 400mg.
Child ; Citrobacter freundii* ; Citrobacter* ; Conjunctivitis* ; Conjunctivitis, Bacterial ; Corynebacterium diphtheriae ; Exudates and Transudates ; Gentamicins ; Humans ; Infant ; Inflammation ; Male ; Moraxella ; Mucous Membrane ; Neisseria gonorrhoeae ; Respiratory System ; Skin ; Staphylococcus ; Streptococcus ; Streptococcus pneumoniae

BACKGROUND: Antimicrobial resistance to third-generation cephalosporins in gram-negative bacteria, especially Enterobacter, Citrobacter, and Serratia spp., is increasing. The resistance mechanism of these organisms are hyperproduction of AmpC beta-lactamase and plasmid-mediated extended-spectrum beta-lactamase (ESBL). This study was to determine the occurrence of AmpC hyperproduction and ESBLs in E. cloacae, C. freundii, and S. marcescens over a 3-month period in 2002. METHODS: We tested total of 619 consecutive, nonduplicate isolates (229 E. cloacae, 183 C. freundii, 207 S. marcescens) from 12 university hospitals and a commercial laboratory in Korea. Antimicrobial susceptibilities were tested using the disk diffusion method. AmpC hyperproduction was defined as nonsusceptible to cefotaxime or ceftazidime for E. cloacae and C. freundii and as nonsusceptible to cefotaxime for S. marcescens. ESBL production was determined by the double disk synergy test. RESULTS: Among the E. cloacae, C. freundii and S. marcescens derepressed strains were 20.5%, 30.1%, and 31.4% and ESBL producers were 23.6%, 10.9%, and 15.5%, respectively. The AmpC derepressed strains and ESBL producers revealed lower susceptibility rates for ciprofloxacin, piperacillin, piperacillin-tazobactam and aminoglycosides. CONCLUSIONS: These data reveal that the occurrence of AmpC derepressants and ESBL producers among E. cloacae, C. freundii and S. marcescens is relatively high. Continued nationwide surveillance is necessary to provide information on the spread of these important mechanisms of resistance to beta-lactams.
Aminoglycosides ; beta-Lactamases ; beta-Lactams ; Cefotaxime ; Ceftazidime ; Cephalosporins ; Ciprofloxacin ; Citrobacter ; Citrobacter freundii* ; Cloaca ; Diffusion ; Enterobacter ; Enterobacter cloacae* ; Gram-Negative Bacteria ; Hospitals, University ; Korea ; Piperacillin ; Serratia ; Serratia marcescens*