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| Registros recuperados: 94 | |
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| Gales,Ana C.; Sader,Helio S.; Ribeiro,Julival; Zoccoli,Cassia; Barth,Afonso; Pignatari,Antonio C.. |
| We report the antimicrobial susceptibility patterns of the most frequently isolated Gram-positive bacteria in the Brazilian hospitals participating in the SENTRYAntimicrobial Surveillance Program. The strains were consecutively collected (one per patient) between January 2005 and September 2008 and susceptibility tested by reference broth microdilution methods at the JMI Laboratories (North Liberty, Iowa, USA). A total of 3,907 Gram-positive cocci were analyzed. The Gram-positive organisms most frequently isolated from bloodstream infections were Staphylococcus aureus (2,218 strains; 20.2% of total), coagulase-negative staphylococci (CoNS; 812 strains [14.7%]), and Enterococcus spp. (754 strains; 5.0%). S. aureus ranked first (28.1%) and Enterococcus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial resistance; SENTRY; Nosocomial infections; Brazil. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702009000200004 |
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| Silveira,Alessandro Conrado de Oliveira; Cunha,Gabriela Rosa da; Caierão,Juliana; Cordova,Caio Mauricio Mendes de; d'Azevedo,Pedro Alves. |
| ABSTRACTTo determine the epidemiological and molecular characteristics of 12 Staphylococcus aureus isolates presenting heteroresistance to vancomycin in laboratories of two cities in Santa Catarina, southern Brazil. Epidemiological data, including the city of isolation, health institution, and date of isolation were considered, as well as the associated clinical specimen. For molecular characterization, we analyzed the staphylococcal cassette chromosome types, the erm gene presence, and the genomic diversity of isolates using pulsed-field gel electrophoresis. The 12 isolates of S. aureus were previously confirmed as heteroresistance to vancomycin using the population analysis profile-area under curve. Regarding genetic variability, two clones were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: MRSA; Small colony variants; Antimicrobial resistance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000500466 |
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| Critchley,Ian A.; Blosser,Renée S.; Karlowsky,James A.; Yamakita,Juri; Barth,Alfonso; Sader,Helio S.; Mendes,Caio; Teixeira,Lucia; Rossi,Flavia; Dias,Cicero A. C.; Jones,Mark E.; Thornsberry,Clyde; Sahm,Daniel F.. |
| The in vitro antimicrobial susceptibility of the respiratory pathogens Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis to commonly tested and prescribed agents was investigated during 1999-2000 and compared with results obtained during a previous 1997-1998 study. Of 448 isolates of S. pneumoniae collected and tested in 1999-2000, 77.2% were susceptible, 19.9% were intermediate, and 2.9% were resistant to penicillin, demonstrating that there were no major changes in susceptibility to penicillin from 1997-1998 (77.1% susceptible, 18.7% intermediate, 4.2% resistant). All S. pneumoniae isolates from 1999-2000 were susceptible to levofloxacin and vancomycin, and >90% were susceptible to the beta-lactams (amoxicillin-clavulanate,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Antimicrobial resistance; Surveillance study; Respiratory pathogen. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000600002 |
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| Paixão,Vilma Almeida; Barros,Tânia Fraga; Mota,Clélia Maria C; Moreira,Tamy Fagundes; Santana,Maria Angélica; Reis,Joice Neves. |
| Respiratory infection is very common in patients suffering from cystic fibrosis (CF). However, the antimicrobial resistance rate of isolates from CF patients is not often documented. In this study, 279 respiratory specimens of 146 patients were prospectively collected from July to December 2006. Microbiological cultures and antimicrobial susceptibility tests of the most frequently isolated bacteria were performed. Sputum and oropharyngeal swabs were processed for culture. During the study period, 50% of the patients harbored Staphylococcus aureus, 35% Pseudomonas aeruginosa, 4.7% Haemophilus influenzae. Methicillin resistant S. aureus (MRSA) were detected in 8 (6%) patients; ESBL and MBL-producing P. aeruginosa were not identified in these patients. The... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cystic fibrosis; Antimicrobial resistance; Pseudomonas aeruginosa; Staphylococcus aureus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000400016 |
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| Barberino,Maria Goreth; Cruvinel,Silvia de Araujo; Faria,Célio; Salvino,Marco Aurélio; Silva,Marcio de Oliveira. |
| ABSTRACT Carbapenemases have great importance in the global epidemiological scenario since infections with carbapenemase-producing bacteria are associated with high mortality, especially in hospitalized patients in intensive care units. This study describes two microorganisms producers of the New Delhi Metallo-b-lactamase, Klebsiella pneumoniae and Citrobacter freundii, from two patients admitted to a public hospital in Salvador, Bahia. These are the first clinical cases of New Delhi Metallo-b-lactamase described in microorganisms in the north and northeast Brazil. The isolates were characterized by antimicrobial susceptibility test, with resistance to all β-lactams including carbapenems, negative Modified Hodge Test and the synergy test with... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: New Delhi Metallo-b-lactamase; Carbapenemase; Antimicrobial resistance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000100047 |
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| Nascimento-Carvalho,Cristiana M.C.; Lopes,Antônio A.; Gomes,Maria Daniela B.S.; Magalhães,Morgana P.; Oliveira,Juliana R.; Vilas-Boas,Ana Luisa; Ferracuti,Roberta; Brandileone,Maria Cristina C.; Guerra,Maria Luiza L.S.; Alves,Noraney N.; Athayde,Ledilce A.; Caldas,Renilza M.; Barberino,Maria Goreth M. A.; Duarte,Jussara; Brandão,Maria Angélica S.; Rocha,Heonir; Benguigui,Yehuda; Di Fabio,José Luis. |
| Pneumonia is one of the leading causes of hospitalization and death among children in developing countries, and mortality due to pneumonia has been associated with S. pneumoniae infection. This investigation was designed to describe the antimicrobial susceptibility and serotype patterns of pneumococcal strains recovered from the blood of children with community-acquired pneumonia (CAP) and to assess the clinical findings of pneumococcal bacteremic patients with pneumonia. In a 26 month prospective study, blood cultures were obtained as often as possible from children (<16 years of age) diagnosed with CAP in two emergency rooms. Antimicrobial drug susceptibility tests and serotyping were performed when pneumococcus was identified. We studied 3,431 cases... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Antimicrobial resistance; Serotypes; Blood culture; Community-acquired pneumonia; Children. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000100003 |
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| Ibarra,J.O.; Alvarado,D.E.. |
| The susceptibility in vitro of 71 isolations of V. cholerae was evaluated: 24 of clinical origin and 47 strains of clinical and environmental origin collected in the epidemic of 1991 and during the outbreak epidemic of 1998 in Lima-Peru respectively. The biochemical and serological tests carried out established that 43 (60,6%) corresponded to the serogroup O1 Ogawa of the 1998 epidemic; 26 (36.6%) were of the serotype Inaba, being 24 of them isolated in 1991. Two strains did not belong to the serogroup O1. By means of disk diffusion method and Minimal Inhibitory Concentration (MIC), 15 strains with multi-resistance to antibiotics were determined, 10 of which were of clinical origin and 5 of natural origin, showing 9 antibiotypes with different resistance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vibrio cholerae; Antimicrobial resistance; Cholera outbreak. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000100022 |
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| Pan,Fen; Han,Lizhong; Kong,Jing; Wang,Chun; Qin,Huihong; Xiao,Shuzhen; Zhu,Junying; Zhang,Hong. |
| Background: Streptococcus pneumoni ae, which cause noninvasive pneumococcal diseases, severely impair children's health. This study analyzed serotype distribution and antimicrobial resistance of S. pneumoni ae from January 2012 to December 2012 in a Children's Hospital, Shanghai. Methods: A total of 328 pneumococcal isolates were serotyped by multiplex sequential PCR and/or capsule-quellung reaction. The minimum inhibitory concentrations for 11 antimi- crobial agents were determined by broth microdilution method. Results: Among 328 strains, 19F (36.3%), 19A (13.4%), 6A (11.9%), 23F (11.0%), 14 (5.8%), 6B (5.2%), and 15B/C (4.3%) were the most common serotypes. The coverage rates of 7-, 10-, and 13-valent conjugate vaccines (PCV7, PCV10, and PCV13) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Serotype; Antimicrobial resistance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000200141 |
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| Motta,R.N.; Oliveira,M.M.; Magalhães,P.S.F.; Dias,A.M.; Aragão,L.P.; Forti,A.C.; Carvalho,C.B.M.. |
| We bacteriologically analyzed 156 species of Enterobacteriaceae, isolated from 138 patients with community-acquired diabetic foot ulcers, in a prospective study made at a diabetic center and at the Federal University of Ceará, Brazil, from March, 2000, to November, 2001.The samples were cultured using selective media, and identification, susceptibility tests and detection of plasmid-mediated-extended-spectrum-beta-lactamase (ESBL) producing strains were made with conventional and automated methods. The most frequently occurring pathogens were K. pneumoniae (21.2%), Morganella morganii (19.9%) and E. coli (15.4%). High resistance rates were noted for ampicillin, first generation cephalosporin, trimethoprim/sulfamethoxazole, tetracycline,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ESBL-producing strains; Antimicrobial resistance; Enterobacteriaceae. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000200006 |
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| Sader,Helio S.; Gales,Ana C.; Pfaller,Michael A.; Mendes,Rodrigo E.; Zoccoli,Cássia; Barth,Afonso; Jones,Ronald N.. |
| BACKGROUND: Pathogen frequency and resistance patterns may vary significantly from country to country and also in different hospitals within a country. Thus, regional surveillance programs are essential to guide empirical therapy and infection control measures. METHODS: Rank order of occurrence and antimicrobial susceptibility of pathogenic species causing bloodstream infections (BSI), lower respiratory tract infections (LRTI), wound or skin and soft tissue infections (WSSTI), and urinary tract infections (UTI) in hospitalized patients were determined by collecting consecutive isolates over a specified period of time, as part of the SENTRY Antimicrobial Resistance Surveillance Program (SENTRY). All isolates were tested by reference broth microdilution.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SENTRY; Antimicrobial resistance; Nosocomial infection; Surveillance program. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000400006 |
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| Simoes,Jose Antonio; Alves,Valeria Moraes Neder; Fracalanzza,Sergio Eduardo Longo; Camargo,Rodrigo Pauperio Soares de; Mathias,Lenir; Milanez,Helaine Maria Besteti Pires; Brolazo,Eliane Melo. |
| Colonization by Group B Streptococcus (GBS) is highly prevalent among pregnant women, with prevalence rates ranging between 4% and 30%. The infection may be transmitted vertically and may result in serious neonatal consequences. In the period from November 2003 to May 2004, a cross-sectional study was carried out among 316 parturients at the Jundiaí Teaching Hospital to establish the prevalence of genital GBS colonization, to identify the factors associated with colonization and the characteristic phenotypes of these streptococci. Samples from rectal and vaginal areas were collected for selective culture in Todd-Hewitt broth. Susceptibility to 7 antimicrobial agents was tested using the antibiotic diffusion disk technique, and the isolated strains were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus agalactiae; Neonatal infections; Antimicrobial resistance; Serum type; GBS; Pregnant woman. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000200019 |
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| Prado,Marinésia Aparecida; Gir,Elucir; Pereira,Milca Severino; Reis,Cleomenes; Pimenta,Fabiana Cristina. |
| Cockroaches carry microorganisms to sterilized materials, equipment and non-contaminated food in hospitals and in homes. Hence, they are regarded as major microbial vectors. We isolated and identified microorganisms from living cockroaches captured from a Brazilian health care institution and we determined the antimicrobial susceptibility profile of the isolates. Following collection, cockroaches were immobilized at 4ºC for 10 to 20 minutes, immersed in 0.8% saline solution and then homogenized. Next, the suspension was seeded in culture media: brain and heart agar infusion, MacConkey agar, Naito agar, and they were incubated for up to 48 hours at 37ºC. Sabouraud agar cultures were incubated at ambient temperature. The microbial colonies were analyzed with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cockroach; Microorganism; Nosocomial infection; Antimicrobial resistance. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000100006 |
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| Titze-de-Almeida,Ricardo; Rollo Filho,Maurício; Nogueira,Celeste A.; Rodrigues,Isabela P.; Eudes Filho,João; Nascimento,Rejane S. do; Ferreira II,Renato F.; Moraes,Lídia M. P.; Boelens,Hélène; Van Belkum,Alex; Felipe,Maria Sueli Soares. |
| We studied the antimicrobial resistance and the molecular epidemiology of 99 enterococcal surveillance isolates from two hospitals of Brasília, Brazil. Conventional biochemical tests were used to identify the enterococcal species and the disk diffusion method was used to determine their resistance profiles. Enterococcus faecalis (76%) and E. faecium (9%) were the most prevalent species. No enterococci showed the vanA or vanB vancomycin resistance phenotypes or genotypes. Only the intrinsically resistant species E. gallinarum (n=2) and E. casseliflavus (n=3) harbored the vancomycin-resistance genes vanC1 and vanC2/3, respectively. We found E. faecalis isolates with high-level resistance to gentamicin (22%) and streptomycin (8%) and both E. faecalis and E.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enterococci; Antimicrobial resistance; Genotyping. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000300002 |
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| Registros recuperados: 94 | |
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