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| Registros recuperados: 26 | |
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| Lopardo,Horacio Ángel; Fossati,Sofía. |
| En la Argentina, los primeros neumococos no sensibles a penicilina (PNSP) se detectaron en 1981 en un hospital pediátrico de la ciudad de La Plata. Interesantemente, no se diseminaron a otros centros sino hasta 7 años después. Luego aumentaron desde un 17% en 1994 hasta un 43,2% en 1996, y permanecieron en esas cifras hasta la actualidad. Se observaron también cambios en la prevalencia de neumococos resistentes a penicilina (PRSP) (CIM≥2 μg/mL) con picos a fines de la década del 90 y una reducción importante en los últimos años. Se supone que esta frecuencia decreciente de los PRSP pudo obedecer a cambios en la prevalencia de determinados clones cuyas alteraciones en las PBP no hubieran sido tan importantes como para comprometer su... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Resistencia; Antibióticos. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572016000400019 |
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| Villar,Hugo Edgardo; Longo,Liliana María; Laurino,Gustavo Jorge; Vicente,Adriana; Gutiérrez,Marisa Estela; Hoffman,Marta. |
| El proceso de autolisis de Streptococcus pneumoniae en medios líquidos puede ocasionar problemas en muestras de hemocultivos impidiendo su recuperación y, por lo tanto, el diagnóstico microbiológico, así como el estudio de sensibilidad a los antimicrobianos. El objetivo de este trabajo fue revisar la frecuencia de este fenómeno en muestras clínicas y determinar las mejores condiciones de detección para este germen en los sistemas automatizados. Fueron incluidos todos los pacientes con diagnóstico de neumonía y hemocultivos positivos por S. pneumoniae y pacientes con diagnóstico de neumonía, botellas positivas y subcultivos negativos. Se evaluó el tipo de botella empleada, tiempo de detección, tiempo de demora en subcultivar las botellas y recuperación del... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Autolisis; Hemocultivos; BacT/Alert. |
| Ano: 2005 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572005000200002 |
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| Leite,Carolina Regis; Azevedo,Jailton; Galvão,Vivian Santos; Moreno-Carvalho,Otávio; Reis,Joice Neves; Nascimento-Carvalho,Cristiana. |
| Abstract Invasive pneumococcal disease is a relevant public health problem in Brazil, especially among children and the elderly. In July/2010 a 10-valent pneumococcal conjugate vaccine was introduced to the immunization schedule of Brazilian children under two years of age. Between July/2010 and December/2013 we conducted a case-series study on invasive pneumococcal disease in Salvador, Brazil to describe the clinical and bacteriological profile of invasive pneumococcal disease cases during the post-implementation period. Eighty-two cases were eligible. Mean age was 31 years (interquartile range, 3–42); 17.1% and 30.5% were under 2 years and 5 years, respectively. Pneumococcal meningitis (n = 64, 78.1%), bacteraemic pneumococcal pneumonia (n = 12, 14.6%)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Vaccine; Epidemiology. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702016000100056 |
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| Bedran,Maria B. M.; Camargos,Paulo A. M.; Leocádio Filho,Geraldo; Bedran,Renata M.; Najar,Henrique C.. |
| We monitored the susceptibility to penicillin of invasive strains of Streptococcus pneumoniae in two reference laboratories; 502 positive cultures from patients with an active invasive infectious process were analyzed. Streptococcus pneumoniae was identified through conventional procedures, and the oxacillin disc diffusion method was used to check for penicillin susceptibility. Statistical analysis included calculations of the frequency distribution, with 95% confidence intervals (CI), as well as chi-square tests and chi-square for linear trend for temporal analysis of susceptibility. The bacterium was isolated from patients less than a year old (40.7% of the isolates), from infants (55.9%), and from individuals less than 15 years old (64.4%). The majority... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Antimicrobial resistance; Invasive disease. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702005000500006 |
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| Mendes,C.; Marin,M. E.; Quiñones,F.; Sifuentes-Osornio,J.; Cuilty Siller,C.; Castanheira,M.; Zoccoli,C. M.; López,H.; Súcari,A.; Rossi,F.; Barriga Angulo,G.; Segura,A.J.A.; Starling,C.; Mimica,I.; Felmingham,D.. |
| PROTEKT (Prospective Resistant Organism Tracking and Epidemiology for the Ketolide Telithromycin) is a global surveillance study established in 1999 to monitor antibacterial resistance of respiratory tract organisms. Thirteen centers from Argentina, Brazil and Mexico participat ed during 1999-2000; they collected 1,806 isolates (Streptococcus pneumoniae 518, Haemophilus influenzae 520, Moraxella catarrhalis 140, Staphylococcus aureus 351, S. pyogenes 277). Overall, 218 (42.1%) of the S. pneumoniae isolates had reduced susceptibility to penicillin, 79 (15.3%) were penicillin-resistant and 79 (15.3%) were erythromycin-resistant. Mexico had the highest prevalence of penicillin (76.5%) and erythromycin (31.2%) resistance. Of 77 erythromycin-resistant S.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PROTEKT; Latin America; Resistance; Respiratory tract infections; Streptococcus pneumoniae; Haemophilus influenzae; Moraxella catarrhalis; Streptococcus pyogenes; Staphylococcus aureus. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000100006 |
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| Alvares,Jackelline Rodrigues; Mantese,Orlando Cesar; Paula,Alan de; Wolkers,Paula Carolina Bejo; Almeida,Viviene Vieira Prado; Almeida,Samanta Cristine Grassi; Guerra,Maria Luiza Leopoldo Silva; Brandileone,Maria Cristina de Cunto. |
| OBJECTIVES: To determine the prevalence of pneumococcal serotypes and antimicrobial susceptibility in patients with meningitis, and to evaluate the implications for vaccine coverage. METHODS: Pneumococcal strains obtained from normally sterile fluids from patients admitted with meningitis were isolated at the Hospital de Clínicas of the Universidade Federal de Uberlândia, Minas Gerais State, and sent to the Instituto Adolfo Lutz, city of São Paulo, São Paulo State, for further identification, serotyping, and antimicrobial susceptibility determination. RESULTS: From April 1999 to April 2009, 338 pneumococcal strains were isolated, and 72 obtained from patients with meningitis, were analyzed. Patients' ages varied from one month to 82.2 years (mean of 18.4 ±... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Meningitis; Serotyping; Pneumococcal vaccines; Drug resistance. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000100005 |
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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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| 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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| Fica,Alberto; Bunster,Nicolás; Aliaga,Felipe; Olivares,Felipe; Porte,Lorena; Braun,Stephanie; Dabanch,Jeannette; Hormázabal,Juan Carlos; Hernández,Antonio; Benavides,María Guacolda. |
| AIMS:Bacteremic pneumococcal pneumonia (BPP) is a severe condition. To evaluate seasonal distribution, mortality, serotype frequencies, antimicrobial susceptibility, and different severity scores among patients with BPP.PATIENTS AND METHODS:Patients were identified by laboratory data and restricted to adulthood. Standard methods were used for serotyping and antimicrobial susceptibility. Risk factors were analyzed by univariate and multivariate methods. Severity scores (APACHE II, CURB-65 and CAP PIRO) were compared using ROC curves.RESULTS:Sixty events of community-acquired BPP occurred between 2005 and 2010. A seasonal pattern was detected. Mean age was 72.1 years old (81.4% >60 years). All had a predisposing factor. Previous influenza (3.3%) or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Bacteremia; Serotyping; Microbial drug resistance; Risk factors; Mortality; Elderly; CURB-65; APACHE II; PIRO. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000200115 |
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| Berezin,Eitan Naaman; Iazzetti,Marco Antonio. |
| We reviewed the incidence of occult bacteremia, to identify the most frequent etiological agents of bacteremias in otherwise healthy children from one month to 10 years old, who had fever of unknown origin attended at the emergency ward of an urban, university-affiliated pediatric referral center. This was a retrospective medical record review, evaluating children with fever. Data were collected from the initial visit, when blood cultures, hematological properties and hemosedimentation rates were examined. Fever was considered as the highest temperature assessed in the hospital or reported by the responsible adult. Occult bacteremia was discovered in 1.4% of the 1,051 children evaluated, and the most common etiologic agent was Streptococcus pneumoniae.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fever; Streptococcus pneumoniae; Occult bacteremia. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000600007 |
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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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| Valenzuela B.,M. Teresa; Altuzarra H.,Rogelio; Trucco A.,Olivia; Villegas R.,Rodrigo; Inostroza S.,Jaime; Granata S.,Paulo; Fleiderman V.,José; Maggi C.,Leonardo. |
| S. pneumoniae is a significant cause of community-acquired pneumonia in the elderly, and accounts for the majority of the pneumonia deaths among the elderly. We conducted this randomized double-blind study to evaluate the immune response to a 23-valent pneumococcal polysaccharide vaccine and the persistence of antibodies two years after the vaccination in an elderly population in Santiago, Chile. A total of 118 elderly nursing home residents received either the pneumococcal or a tetanus control vaccine. Serum samples were taken at enrolment, at two months, and at two years post-vaccination. Pre-vaccination anti-pneumococcal antibody geometric mean concentrations (GMC) were similar in both study groups, with increased levels of antibodies found only against... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Vaccine; Elderly; Immunogenicity; Antibodies. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000300005 |
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| Setchanova,Lena; Murdjeva,Marianna; Stancheva,Iglika; Alexandrova,Alexandra; Sredkova,Maria; Stoeva,Temenuga; Yoneva,Magda; Kurchatova,Anna; Mitov,Ivan. |
| Abstract The 10-valent pneumococcal conjugate vaccine (PCV10) has been included in Bulgarian Childhood Immunization Program since 2010. This study aimed to assess serotype distribution and antimicrobial resistance of 198 invasive and non-invasive Streptococcus pneumoniae strains that had been isolated in Bulgaria during 2011-2016 from patients with invasive (IPD) and non-invasive (NIPD) pneumococcal diseases. The most common invasive serotypes were 3 (10.1%), 19F (4.0%), and 7F (3.0%). A significant decrease in the proportion of invasive vaccine types (VTs) from 64.2% to 35.2% was found in comparison with pre-vaccine era. The most common serotypes among middle ear fluids were 3, 19A and 19F (5.6% each), and VTs fell down from 66.4% to 40.0% in post-PCV10... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Invasive and non-invasive isolates; Serotypes; Antimicrobial nonsusceptibility. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400433 |
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| Registros recuperados: 26 | |
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