Did you mean: weeksella vicosa
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Revista Chilena de Infectologia :... Oct 2011
Topics: Flavobacteriaceae
PubMed: 22051619
DOI: No ID Found -
New Microbes and New Infections Nov 2015Strain FF8(T) (= CSUR P860 = DSM 28259) was isolated in Dakar, Senegal, from the urine of a 65-year-old man with acute cystitis. This strain shows a similarity of...
Strain FF8(T) (= CSUR P860 = DSM 28259) was isolated in Dakar, Senegal, from the urine of a 65-year-old man with acute cystitis. This strain shows a similarity of sequence of 16S rRNA of 98.38% with Weeksella virosa, and its GenBank accession numbers are HG931340 and CCMH00000000. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry analysis had a poor score, ranging from 1.32 to 1.56, that did not allow identification of the bacterium. Using a polyphasic study made of phenotypic and genomic analyses, strain FF8(T) was a Gram-negative, aerobic rod and a member of the family Flavobacteriaceae. The sequenced genome is 2 562 781 bp with one chromosome but no plasmid. It exhibits a G + C content of 35.9% and contains 2390 protein-coding and 56 RNA genes, including a complete rRNA operon. On the basis of these data, we propose the creation of Weeksella massiliensis sp. nov.
PubMed: 26649182
DOI: 10.1016/j.nmni.2015.09.013 -
Journal of Clinical Pathology Feb 1988The antimicrobial susceptibilities, biochemical properties, and cultural characteristics of six strains of Weeksella virosa (formerly group IIf) were determined. The...
The antimicrobial susceptibilities, biochemical properties, and cultural characteristics of six strains of Weeksella virosa (formerly group IIf) were determined. The main characteristics of this non-fermentative organism were production of cytochrome oxidase, gelatinase, and indole, but a lack of saccharolytic activity. A study was then made of the isolation rates of Weeksella virosa from high vaginal swabs from 300 women: a healthy control group (n = 100), a general group with symptoms of vaginal infection (n = 100), and 100 women from a remand centre, where likelihood of exposure to sexually transmitted disease might be expected to be higher. The incidence of Weeksella virosa was found to be 2% in the first two groups. This suggests that, irrespective of the presence of pathogens, the incidence of the species in the general female population is around 2%. A much higher incidence (15%) was found in the third group, suggesting sexual transmission of the organism.
Topics: Anti-Bacterial Agents; Female; Gram-Negative Bacteria; Humans; Kanamycin; Microbial Sensitivity Tests; Neomycin; Trimethoprim; Vagina
PubMed: 3350982
DOI: 10.1136/jcp.41.2.211 -
Standards in Genomic Sciences Feb 2011Weeksella virosa Holmes et al. 1987 is the sole member and type species of the genus Weeksella which belongs to the family Flavobacteriaceae of the phylum Bacteroidetes....
Weeksella virosa Holmes et al. 1987 is the sole member and type species of the genus Weeksella which belongs to the family Flavobacteriaceae of the phylum Bacteroidetes. Twenty-nine isolates, collected from clinical specimens provided the basis for the taxon description. While the species seems to be a saprophyte of the mucous membranes of healthy man and warm-blooded animals a causal relationship with disease has been reported in a few instances. Except for the ability to produce indole and to hydrolyze Tween and proteins such as casein and gelatin, this aerobic, non-motile, non-pigmented bacterial species is metabolically inert in most traditional biochemical tests. The 2,272,954 bp long genome with its 2,105 protein-coding and 76 RNA genes consists of one circular chromosome and is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
PubMed: 21475590
DOI: 10.4056/sigs.1603927 -
BMC Infectious Diseases Jan 2024Weeksella virosa pneumonia is an infection that has been described as a healthcare-associated infection. This is a rare gram-negative anaerobic bacterium associated with...
BACKGROUND
Weeksella virosa pneumonia is an infection that has been described as a healthcare-associated infection. This is a rare gram-negative anaerobic bacterium associated with the use of mechanical ventilation for a long period of time and is more frequent in immunosuppressed patients. This is the first case reported in the state of Veracruz and the second in Mexico.
CASE PRESENTATION
We present the case of a 64-year-old female from Veracruz, Mexico who developed an infectious process in the right pelvic limb after a transcatheter aortic valve replacement procedure and subsequently developed sudden cardiorespiratory arrest requiring mechanical ventilation, with subsequent imaging studies demonstrating a pneumonic process associated with a nosocomial infection.
DISCUSSION AND CONCLUSIONS
We should take into consideration that this pathogen affects not only adults with multiple comorbidities but also children with renal, hepatic, or oncological pathologies, as well as immunocompromised patients, who should be considered high-risk populations for W. virosa infection.
Topics: Adult; Female; Child; Humans; Middle Aged; Pneumonia, Ventilator-Associated; Base Composition; Phylogeny; RNA, Ribosomal, 16S; Sequence Analysis, DNA; Bacteria, Aerobic; Cross Infection
PubMed: 38166822
DOI: 10.1186/s12879-023-08927-0 -
Journal of Clinical Microbiology Dec 2012Weeksella virosa is an aerobic Gram-negative rod that has rarely been reported to cause infection. We describe a fatal case of W. virosa sepsis in a young female with...
Weeksella virosa is an aerobic Gram-negative rod that has rarely been reported to cause infection. We describe a fatal case of W. virosa sepsis in a young female with end-stage renal disease, report three additional cases of W. virosa infection, and review the literature regarding this infection.
Topics: Adult; Anti-Bacterial Agents; Fatal Outcome; Female; Flavobacteriaceae; Flavobacteriaceae Infections; Humans; Kidney Failure, Chronic; Microbial Sensitivity Tests; Sepsis
PubMed: 23035202
DOI: 10.1128/JCM.01761-12 -
Journal of Clinical Microbiology Oct 1990Weeksella virosa (formerly CDC group IIf) is a nonsaccharolytic, oxidase- and catalase-positive, gram-negative rod which is unable to grow on MacConkey agar. At 48 h of...
Weeksella virosa (formerly CDC group IIf) is a nonsaccharolytic, oxidase- and catalase-positive, gram-negative rod which is unable to grow on MacConkey agar. At 48 h of incubation on blood or chocolate agar, the colonies present a characteristic appearance: intensely mucoid, adherent, and cream colored as a result of the production of a nondiffusible yellow pigment. This microorganism has been isolated predominantly from the female genitourinary tract, which indicates the opportunity for sexual transmission. We present the microbiological study of three strains of W. virosa identified in a study of 707 female genital samples, representing an incidence of 0.42%. At the same time, we analyzed the principal biochemical tests used in the identification of this microorganism and the susceptibilities of the organism to the different antimicrobial agents assayed.
Topics: Female; Flavobacterium; Humans; Microbial Sensitivity Tests; Terminology as Topic; Urogenital System
PubMed: 2229364
DOI: 10.1128/jcm.28.10.2357-2359.1990 -
Case Reports in Infectious Diseases 2018Peritonitis is a common and serious complication of peritoneal dialysis (PD) with significant morbidity. We report the first case of relapsing peritonitis in a patient...
Peritonitis is a common and serious complication of peritoneal dialysis (PD) with significant morbidity. We report the first case of relapsing peritonitis in a patient on peritoneal dialysis. A 63-year-old Chinese man, with history of renal failure on continuous ambulatory peritoneal dialysis, presented with cloudy peritoneal effluent and abdominal pain. There was no sign or symptom suggestive of exit-site/tunnel tract infection. Peritoneal effluent cultures yielded which was initially misidentified as and species by the API® 20 NE and VITEK® 2 GN ID card, respectively. He was treated with intraperitoneal amikacin, but the infection relapsed within a few days upon completing each antibiotic course. He eventually required removal of catheter and was transferred to hemodialysis. Infections due to unusual organisms may pose a diagnostic issue as currently available commercial tests will not be able to identify them. There is a role for using 16S rRNA sequencing to help identify these organisms and guide patient management.
PubMed: 30073100
DOI: 10.1155/2018/3820513 -
New Microbes and New Infections Jan 2017An obligate aerobic, Gram-negative, nonmotile and nonsporulating rod designated Marseille P2517 was isolated from the vaginal flora. We describe its features, annotate...
An obligate aerobic, Gram-negative, nonmotile and nonsporulating rod designated Marseille P2517 was isolated from the vaginal flora. We describe its features, annotate the genome and compare it to the closest species. The 16S rRNA analysis shows 93.03% sequence similarity with the phylogenetically closest species. Its genome is 2 434 475 bp long and presents 38.16% G+C. On the basis of these data, it can be considered as a new genus in the family, for which we proposed the name gen. nov., sp. nov. The type strain is Marseille P2517.
PubMed: 28053707
DOI: 10.1016/j.nmni.2016.11.006 -
Journal of Clinical Microbiology Dec 1987A production model of the semi-automated PASCO MIC-ID system (PASCO Laboratories, Wheat Ridge, Colo.) was evaluated with 122 groups or species of gram-negative bacilli,...
A production model of the semi-automated PASCO MIC-ID system (PASCO Laboratories, Wheat Ridge, Colo.) was evaluated with 122 groups or species of gram-negative bacilli, which included typical (499 cultures) and atypical (37 cultures) strains of fermenters and nonfermenters. The PASCO system identified 90.9% of 536 cultures accurately; these included 90.8% of 152 nonfermenters, 93.8% of 308 enteric fermenters, and 78.9% of 76 oxidase-positive fermenters. These results were obtained with the aid of serologic tests and a few additional biochemical tests, when recommended by the PASCO system. Of the 14 misidentified nonfermenters, 3 were Pseudomonas paucimobilis, 3 were Weeksella virosa (Centers for Disease Control group IIf), 2 were Xanthomonas (Pseudomonas) maltophilia, and 6 were randomly distributed among the other groups and species tested. The 19 enteric fermenters that were misidentified were randomly distributed among the groups and species tested. Of the 16 misidentified oxidase-positive fermenters, 4 were Pasteurella ureae, and 12 were randomly distributed among the other groups and species. The system identified the most commonly encountered organisms at a rate of 95% or better. The PASCO system is easy to inoculate and read. A slightly improved data base should remedy most of the identification problems.
Topics: Bacteriological Techniques; Fermentation; Gram-Negative Bacteria; Microbial Sensitivity Tests; Microcomputers
PubMed: 3323230
DOI: 10.1128/jcm.25.12.2363-2366.1987