Among 477 patients with susceptible Enterobacter spp., 49 subsequently harbored third-generation cephalosporin-resistant Enterobacter spp. Broad-spectrum cephalosporins were independent risk factors for resistance (relative risk [OR] = 2.3, P = 0.01); quinolone therapy was protective (OR = 0.4, P = 0.03). There were trends toward decreased risk for resistance among patients receiving broad-spec...

Of 72 blood isolates of Enterobacter spp. collected over an 8-year period, 50% (36 of 72) were derepressed or partially derepressed AmpC mutants. The extended-spectrum -lactamase (ESBL) production rate was 43% (31 of 72 isolates), and 67.3% (31 of 46) of extended-spectrum cephalosporin-resistant strains produced ESBLs. Thus, a confirmatory test for ESBL production is necessary for extended-spec...

Background: The spread of resistant bacteria has caused serious concern worldwide. multidrug-resistant (MDR) and extensive drug-resistant (XDR) limits the choice antibiotics, making available antibiotics less effective. Objectives: This study aimed to investigate resistance patterns seven global threatening organisms announced by Centers for Disease Control Prevention (CDC) one year in Iran, ca...

Sir, Carbapenems are often the last active antibiotics for serious infections caused by Gram-negative opportunist pathogens. Resistance is still extremely rare among Enterobacteriaceae, but is increasingly detected in isolates of Klebsiella and Enterobacter in the UK. In a few cases it is mediated by class A or B carbapenemases, but more often results from combinations of a b-lactamase [often a...

Norfloxacin is a quinolinecarboxylic acid compound. We examined the in vitro activity of this compound against gram-positive and -negative species, including anaerobic species. It inhibited 90% (MIC90) of strains of Escherichia coli at 0.05 microgram/ml, Klebsiella sp. at 0.4 microgram/ml, Salmonella and Shigella spp. at 0.1 microgram/ml, Citrobacter sp. at 0.4 microgram/ml, Enterobacter cloaca...

OBJECTIVES The National Antimicrobial Surveillance Forum is a continuous surveillance organisation comprising all academic/public and private sector laboratories in South Africa. METHODS The antibiotic susceptibility of blood culture isolates of Escherichia coli, Klebsiella pneumoniae, Enterobacter species, Pseudomonas aeruginosa, Acinetobacter baumannii and Staphylococcus aureus from patient...

OBJECTIVES The purpose of this study is to compare the antimicrobial activity of linezolid and tigecycline with other commonly used antibiotics against a variety of clinical isolates at Royal Hospital, Muscat. METHODS Clinically-significant bacterial isolates in Royal hospital during the period from 1st of March to 30th of June 2007 were collected, stored and finally tested to determine their...

Urinary tract infections are a common cause of end-stage renal disease in Turkey. This prospective study investigated the antibiotic resistance patterns of uropathogens in order to recommend appropriate therapeutic protocols for children with urinary tract infections in Istanbul, Turkey. Between October 2007 and October 2008, children presenting with a first episode of urinary tract infection t...

The aim of this study was to optimise the antimicrobial efficacy of plant essential oils (EOs) for control of Listeria spp. and spoilage bacteria using food model media based on lettuce, meat and milk. The EOs evaluated were lemon balm, marjoram, oregano and thyme and their minimum inhibitory concentrations (MIC) were determined against Enterobacter spp., Listeria spp., Lactobacillus spp., and ...