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1.
Am J Infect Control ; 2024 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-38437883

RESUMO

BACKGROUND: Catheter-Associated Urinary Tract Infections (CAUTIs) frequently occur in the intensive care unit (ICU) and are correlated with a significant burden. METHODS: We implemented a strategy involving a 9-element bundle, education, surveillance of CAUTI rates and clinical outcomes, monitoring compliance with bundle components, feedback of CAUTI rates and performance feedback. This was executed in 299 ICUs across 32 low- and middle-income countries. The dependent variable was CAUTI per 1,000 UC days, assessed at baseline and throughout the intervention, in the second month, third month, 4 to 15 months, 16 to 27 months, and 28 to 39 months. Comparisons were made using a 2-sample t test, and the exposure-outcome relationship was explored using a generalized linear mixed model with a Poisson distribution. RESULTS: Over the course of 978,364 patient days, 150,258 patients utilized 652,053 UC-days. The rates of CAUTI per 1,000 UC days were measured. The rates decreased from 14.89 during the baseline period to 5.51 in the second month (risk ratio [RR] = 0.37; 95% confidence interval [CI] = 0.34-0.39; P < .001), 3.79 in the third month (RR = 0.25; 95% CI = 0.23-0.28; P < .001), 2.98 in the 4 to 15 months (RR = 0.21; 95% CI = 0.18-0.22; P < .001), 1.86 in the 16 to 27 months (RR = 0.12; 95% CI = 0.11-0.14; P < .001), and 1.71 in the 28 to 39 months (RR = 0.11; 95% CI = 0.09-0.13; P < .001). CONCLUSIONS: Our intervention, without substantial costs or additional staffing, achieved an 89% reduction in CAUTI incidence in ICUs across 32 countries, demonstrating feasibility in ICUs of low- and middle-income countries.

2.
Sci Total Environ ; 839: 156074, 2022 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-35623509

RESUMO

Bacteriophages (phages) are viruses considered to be natural bacterial predators and widely detected in aquatic environments. Sewage samples are an important source of phage isolation since high density and diversity of bacterial cells are present, due to human, animal and household fluids. This study aims to investigate and characterise phages against an extremely drug-resistant (XDR) lineage, Klebsiella pneumoniae ST16, using sewage samples from different parts of the World. Sewage samples from Brazil, Bangladesh, Saudi Arabia, Thailand and the United Kingdom were collected and used to investigate phages against ten K. pneumoniae ST16 (hosts) recovered from infection sites. The phages were microbiological and genetically characterised by double-agar overlay (DLA), transmission electron microscopy and Illumina WGS. The host range against K. pneumoniae belonging to different sequence types was evaluated at different temperatures by spot test. Further phage characterisation, such as efficiency of plating, optimal phage temperature, and pH/temperature susceptibility, were conducted. Fourteen lytic phages were isolated, belonging to Autographiviridae, Ackermannviridae, Demerecviridae, Drexlerviridae, and Myoviridae families, from Brazil, Bangladesh, Saudi Arabia and Thailand and demonstrated a great genetic diversity. The viruses had good activity against our collection of clinical K. pneumoniae ST16 at room temperature and 37 °C, but also against other important Klebsiella clones such as ST11, ST15, and ST258. Temperature assays showed lytic activity in different temperatures, except for PWKp18 which only had activity at room temperature. Phages were stable between pH 5 and 10 with minor changes in phage activity, and 70 °C was the temperature able to kill all phages in this study. Using sewage from different parts of the World allowed us to have a set of highly efficient phages against an K. pneumoniae ST16 that can be used in the future to develop new tools to combat infections in humans or animals caused by this pathogen.


Assuntos
Bacteriófagos , Klebsiella pneumoniae , Animais , Bacteriófagos/genética , Especificidade de Hospedeiro , Klebsiella , Esgotos
3.
Int J Antimicrob Agents ; 59(5): 106568, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35288258

RESUMO

OBJECTIVE: To describe the undetected circulation of an epidemic BKC-1-producing Klebsiella pneumoniae ST442 clone, occasioning the first reported outbreak of the infrequent carbapenemase BKC-1. METHODS: Six hundred and forty-seven K. pneumoniae isolates (2008-2017) with reduced susceptibility to carbapenems were screened for blaBKC-1. BKC-1-positive isolates were typed using pulsed-field gel electrophoresis and multi-locus sequence typing. Susceptibility profiles were determined by broth microdilution, and additional antimicrobial resistance genes (ARGs) were investigated by polymerase chain reaction. Some isolates were submitted to full genomic characterization by whole-genome sequencing (Illumina MiSeq and MinIon), and in-vivo virulence studies using the Galleria mellonella model. RESULTS: Sixteen (2.5%) K. pneumoniae, from 15 patients, carrying blaBKC-1 were found between 2010 and 2012. Among these patients, the all-cause mortality rate was 54.5%. A major clone - A1-ST442 (13/16) - was isolated during the study period. The BKC-1-producing isolates had a multi-drug-resistant phenotype, remaining susceptible to gentamicin (87.5%) and ceftazidime-avibactam (100%) alone. The presence of two carbapenemases - blaBKC-1 and blaKPC-2 - was detected in six isolates, increasing the ß-lactam minimum inhibitory concentration significantly. Additionally, other ARGs were identified on A1-ST442 and B1-ST11 clones. The B1-ST11 clone was more virulent than the A1-ST442 clone. CONCLUSION: An undetected outbreak caused predominantly by a BKC-1-positive A1-ST442 clone between 2010 and 2012 was identified 10 years later in a Brazilian hospital. The misidentification of BKC-1 may have worsened the spread of resistant clones; this reinforces the need for correct and rapid identification of antimicrobial resistance mechanisms in hospitals.


Assuntos
Infecções por Klebsiella , Klebsiella pneumoniae , Antibacterianos/farmacologia , Antibacterianos/uso terapêutico , Proteínas de Bactérias/genética , Carbapenêmicos/farmacologia , Surtos de Doenças , Humanos , Infecções por Klebsiella/tratamento farmacológico , Infecções por Klebsiella/epidemiologia , Klebsiella pneumoniae/genética , Testes de Sensibilidade Microbiana , Tipagem de Sequências Multilocus , beta-Lactamases/genética
4.
Emerg Microbes Infect ; 11(1): 1015-1023, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35259067

RESUMO

Bacteriophages are the most abundant organisms on Earth. As there are few effective treatment options against some pathogens, the interest in the bacteriophage control of multi-drug-resistant bacterial pathogens is escalating, especially for Klebsiella pneumoniae. This study aimed to develop a phage-based solution to the rising incidence of extensively drug-resistant clinical Klebsiella pneumoniae sequence type (ST16) infections starting from a set of phages recently characterized against this lineage. A phage-cocktail (Katrice-16) composed of eight lytic phages was characterized for potential use in humans. In vitro and in vivo broth inhibition and Galleria mellonella rescue assays were used to demonstrate the efficacy of this approach using a collection of 56 strains of K. pneumoniae ST16, with distinct genetic backgrounds that were collected from clinical infections from four disparate nations. Additionally, Katrice-16 anti-biofilm activity, synergism with meropenem, and activity in human body fluids were also assessed. Katrice-16 was highly active in vitro against our K. pneumoniae ST16 collection (AUC% median = 86.48%; Q1 = 83.8%; Q2 = 96.85%; Q3 = 98.85%). It additionally demonstrated excellent in vivo activity in G. mellonella rescue assays, even with larvae infected by isolates that exhibited moderate in vitro inhibition. We measured significant anti-biofilm activity over 12 h (p = .0113) and synergic activity with meropenem. In addition, we also demonstrate that Katrice-16 maintained high activity in human body fluids. Our results indicate that our cocktail will likely be an effective solution for human infections with this increasingly prevalent and often highly resistant bacterial clone.


Assuntos
Bacteriófagos , Klebsiella pneumoniae , Antibacterianos/farmacologia , Bacteriófagos/genética , Humanos , Incidência , Klebsiella pneumoniae/genética , Meropeném/farmacologia , Testes de Sensibilidade Microbiana
5.
Braz J Infect Dis ; 26(1): 101666, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35032443

RESUMO

BACKGROUND: There is an increasing use of daily chlorhexidine gluconate (CHG) bathing to decrease healthcare associated infections (HAI). Daily bathing of patients with CHG has been successfully used to prevent multidrug-resistant organisms (MDROs) HAI in intensive care units (ICU). METHODS: This was a 12-month, single-center, open, cluster randomized trial, conducted at four ICUs of the University Hospital of Universidade Federal de São Paulo, Unifesp, Brazil. ICUs were randomized to either perform daily bathing of the patients with pH neutral soap and water - control units, or daily bathing with 2% CHG detergent solution - intervention units. We evaluated the incidence density rate of central line-associated bloodstream infection (CLABSI), ventilator-associated pneumonia (VAP), catheter associated urinary tract infection (CAUTI), Klebsiella pneumoniae carbapenemase (KPC)-producing enterobacteria HAI, and death in the intervention and control units. RESULTS: A total of 1,640 admissions of 1,487 patients occurred during the study period (41.2% control group, and 58.8% intervention group). Incidence density rates of KPC-producing enterobacteria HAI were 5.01 and 2.25 infections/1000 patient-days in the control units and in the intervention units (p = 0.013) and mortality rates were 28.7% and 18.7% in the control units and in the intervention units (p<0.001), respectively. No difference between groups was observed in CLABSI incidence (p = 0.125), VAP incidence (p = 0.247) and CAUTI incidence (p = 0.435). No serious skin reactions were noted in either study group. Daily 2% CHG detergent solution bathing is a feasible, low cost option for HAI prevention in ICU.


Assuntos
Anti-Infecciosos Locais , Infecção Hospitalar , Adulto , Brasil/epidemiologia , Clorexidina/análogos & derivados , Infecção Hospitalar/epidemiologia , Infecção Hospitalar/microbiologia , Infecção Hospitalar/prevenção & controle , Atenção à Saúde , Humanos , Incidência , Unidades de Terapia Intensiva
6.
Braz. j. infect. dis ; 26(1): 101666, 2022. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1364540

RESUMO

Abstract Background There is an increasing use of daily chlorhexidine gluconate (CHG) bathing to decrease healthcare associated infections (HAI). Daily bathing of patients with CHG has been successfully used to prevent multidrug-resistant organisms (MDROs) HAI in intensive care units (ICU). Methods This was a 12-month, single-center, open, cluster randomized trial, conducted at four ICUs of the University Hospital of Universidade Federal de São Paulo, Unifesp, Brazil. ICUs were randomized to either perform daily bathing of the patients with pH neutral soap and water - control units, or daily bathing with 2% CHG detergent solution - intervention units. We evaluated the incidence density rate of central line-associated bloodstream infection (CLABSI), ventilator-associated pneumonia (VAP), catheter associated urinary tract infection (CAUTI), Klebsiella pneumoniae carbapenemase (KPC)-producing enterobacteria HAI, and death in the intervention and control units. Results A total of 1,640 admissions of 1,487 patients occurred during the study period (41.2% control group, and 58.8% intervention group). Incidence density rates of KPC-producing enterobacteria HAI were 5.01 and 2.25 infections/1000 patient-days in the control units and in the intervention units (p = 0.013) and mortality rates were 28.7% and 18.7% in the control units and in the intervention units (p<0.001), respectively. No difference between groups was observed in CLABSI incidence (p = 0.125), VAP incidence (p = 0.247) and CAUTI incidence (p = 0.435). No serious skin reactions were noted in either study group. Daily 2% CHG detergent solution bathing is a feasible, low cost option for HAI prevention in ICU.

7.
Braz J Cardiovasc Surg ; 36(6): 725-735, 2021 12 03.
Artigo em Inglês | MEDLINE | ID: mdl-34882365

RESUMO

INTRODUCTION: We investigated the clinical course and outcomes of patients submitted to cardiovascular surgery in Brazil and who had developed symptoms/signs of coronavirus disease 2019 (COVID-19) in the perioperative period. METHODS: A retrospective multicenter study including 104 patients who were allocated in three groups according to time of positive real time reverse transcriptase-polymerase chain reaction (RT-PCR) for the SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2): group 1, patients who underwent cardiac surgery > 10 days after positive RT-PCR; group 2, patients with a positive RT-PCR within 10 days before or after surgery; group 3, patients who presented positive RT-PCR > 10 days after surgery. The primary outcome was mortality and secondary outcomes were postoperative complications, intensive care unit (ICU) length of stay, and postoperative days of hospitalization. RESULTS: The three groups were similar with respect to age, the European System of Cardiac Operative Risk Evaluation score, and comorbidities, except hypertension. Postoperative complications and death were significantly higher in groups 2 and 3 than in group 1, and no significant difference between groups 2 and 3 was seen. Group 2 showed a high prevalence of surgery performed as an urgent procedure. Although no significant differences were observed in ICU length of stay, total postoperative hospitalization time was significantly higher in group 3 than in groups 1 and 2. CONCLUSION: COVID-19 affecting the postoperative period of patients who underwent cardiovascular surgery is associated with a higher rate of morbidity and mortality. Delaying procedures in RT-PCR-positive patients may help reduce risks of perioperative complications and death.


Assuntos
COVID-19 , Brasil , Humanos , Período Perioperatório , Estudos Retrospectivos , SARS-CoV-2
8.
Gomes, Walter J.; Rocco, Isadora; Pimentel, Wallace S.; Pinheiro, Aislan H. B.; Souza, Paulo M. S.; Costa, Luiz A. A.; Teixeira, Marjory M. P.; Ohashi, Leonardo P.; Bublitz, Caroline; Begot, Isis; Moreira, Rita Simone L; Hossne Jr, Nelson A.; Vargas, Guilherme F.; Branco, João Nelson R.; Teles, Carlos A.; Medeiros, Eduardo A. S.; Sáfadi, Camila; Rampinelli, Amândio; Moratelli Neto, Leopoldo; Rosado, Anderson Rosa; Mesacasa, Franciele Kuhn; Capriata, Ismael Escobar; Segalote, Rodrigo Coelho; Palmieri, Deborah Louize da Rocha Vianna; Jardim, Amanda Cristina Mendes; Vianna, Diego Sarty; Coutinho, Joaquim Henrique de Souza Aguiar; Jazbik, João Carlos; Coutinho, Henrique Madureira da Rocha; Kikuta, Gustavo; Almeida, Zely SantAnna Marotti de; Feguri, Gibran Roder; Lima, Paulo Ruiz Lucio de; Franco, Anna Carolina; Borges, Danilo de Cerqueira; Cruz, Felipe Ramos Honorato De La; Croti, Ulisses Alexandre; Borim, Bruna Cury; Marchi, Carlos Henrique De; Goraieb, Lilian; Postigo, Karolyne Barroca Sanches; Jucá, Fabiano Gonçalves; Oliveira, Fátima Rosane de Almeida; Souza, Rafael Bezerra de; Zilli, Alexandre Cabral; Mas, Raul Gaston Sanchez; Bettiati Junior, Luiz Carlos; Tranchesi, Ricardo; Bertini Jr, Ayrton; Franco, Leandro Vieira; Fernandes, Priscila; Oliveira, Fabiana; Moraes Jr, Roberto; Araújo, Thiago Cavalcanti Vila Nova de; Braga, Otávio Penna; Pedrosa Sobrinho, Antônio Cavalcanti; Teixeira, Roberta Tavares Barreto; Camboim, Irla Lavor Lucena; Gomes, Eduardo Nascimento; Reis, Pedro Horigushi; Garcia, Luara Piovan; Scorsioni, Nelson Henrique Goes; Lago, Roberto; Guizilini, Solange.
Rev. bras. cir. cardiovasc ; 36(6): 725-735, Nov.-Dec. 2021. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1351666

RESUMO

Abstract Introduction: We investigated the clinical course and outcomes of patients submitted to cardiovascular surgery in Brazil and who had developed symptoms/signs of coronavirus disease 2019 (COVID-19) in the perioperative period. Methods: A retrospective multicenter study including 104 patients who were allocated in three groups according to time of positive real time reverse transcriptase-polymerase chain reaction (RT-PCR) for the SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2): group 1, patients who underwent cardiac surgery > 10 days after positive RT-PCR; group 2, patients with a positive RT-PCR within 10 days before or after surgery; group 3, patients who presented positive RT-PCR > 10 days after surgery. The primary outcome was mortality and secondary outcomes were postoperative complications, intensive care unit (ICU) length of stay, and postoperative days of hospitalization. Results: The three groups were similar with respect to age, the European System of Cardiac Operative Risk Evaluation score, and comorbidities, except hypertension. Postoperative complications and death were significantly higher in groups 2 and 3 than in group 1, and no significant difference between groups 2 and 3 was seen. Group 2 showed a high prevalence of surgery performed as an urgent procedure. Although no significant differences were observed in ICU length of stay, total postoperative hospitalization time was significantly higher in group 3 than in groups 1 and 2. Conclusion: COVID-19 affecting the postoperative period of patients who underwent cardiovascular surgery is associated with a higher rate of morbidity and mortality. Delaying procedures in RT-PCR-positive patients may help reduce risks of perioperative complications and death.


Assuntos
Humanos , COVID-19 , Brasil , Estudos Retrospectivos , Período Perioperatório , SARS-CoV-2
9.
Am J Infect Control ; 49(10): 1267-1274, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-33901588

RESUMO

BACKGROUND: We report the results of INICC surveillance study from 2013 to 2018, in 664 intensive care units (ICUs) in 133 cities, of 45 countries, from Latin-America, Europe, Africa, Eastern-Mediterranean, Southeast-Asia, and Western-Pacific. METHODS: Prospective data from patients hospitalized in ICUs were collected through INICC Surveillance Online System. CDC-NHSN definitions for device-associated healthcare-associated infection (DA-HAI) were applied. RESULTS: We collected data from 428,847 patients, for an aggregate of 2,815,402 bed-days, 1,468,216 central line (CL)-days, 1,053,330 mechanical ventilator (MV)-days, 1,740,776 urinary catheter (UC)-days. We found 7,785 CL-associated bloodstream infections (CLAB), 12,085 ventilator-associated events (VAE), and 5,509 UC-associated urinary tract infections (CAUTI). Pooled DA-HAI rates were 5.91% and 9.01 DA-HAIs/1,000 bed-days. Pooled CLAB rate was 5.30/1,000 CL-days; VAE rate was 11.47/1,000 MV-days, and CAUTI rate was 3.16/1,000 UC-days. P aeruginosa was non-susceptible (NS) to imipenem in 52.72% of cases; to colistin in 10.38%; to ceftazidime in 50%; to ciprofloxacin in 40.28%; and to amikacin in 34.05%. Klebsiella spp was NS to imipenem in 49.16%; to ceftazidime in 78.01%; to ciprofloxacin in 66.26%; and to amikacin in 42.45%. coagulase-negative Staphylococci and S aureus were NS to oxacillin in 91.44% and 56.03%, respectively. Enterococcus spp was NS to vancomycin in 42.31% of the cases. CONCLUSIONS: DA-HAI rates and bacterial resistance are high and continuous efforts are needed to reduce them.


Assuntos
Infecções Bacterianas , Infecções Relacionadas a Cateter , Infecção Hospitalar , Pneumonia Associada à Ventilação Mecânica , Infecções Urinárias , Adulto , Infecções Bacterianas/epidemiologia , Infecções Relacionadas a Cateter/epidemiologia , Criança , Infecção Hospitalar/epidemiologia , Humanos , Controle de Infecções , Unidades de Terapia Intensiva , Pneumonia Associada à Ventilação Mecânica/epidemiologia , Estudos Prospectivos , Infecções Urinárias/epidemiologia
10.
mSphere ; 5(5)2020 10 07.
Artigo em Inglês | MEDLINE | ID: mdl-33028683

RESUMO

This study provides the genomic characterization and clinical description of bloodstream infections (BSI) cases due to ST15 KPC-2 producer Klebsiella pneumoniae Six KPC-K. pneumoniae isolates were recovered in 2015 in a tertiary Brazilian hospital and were analyzed by whole-genome sequencing (WGS) (Illumina MiSeq short reads). Of these, two isolates were further analyzed by Nanopore MinION sequencing, allowing complete chromosome and plasmid circularization (hybrid assembly), using Unicycler software. The clinical analysis showed that the 30-day overall mortality for these BSI cases was high (83%). The isolates exhibited meropenem resistance (MICs, 32 to 128 mg/liter), with 3/6 isolates resistant to polymyxin B. The conjugative properties of the blaKPC-2 plasmid and its copy number were assessed by standard conjugation experiments and sequence copy number analysis. We identified in all six isolates a small (8.3-kb), high-copy-number (20 copies/cell) non-self-conjugative IncQ plasmid harboring blaKPC-2 in a non-Tn4401 transposon. This plasmid backbone was previously reported to harbor blaKPC-2 only in Brazil, and it could be comobilized at a high frequency (10-4) into Escherichia coli J53 and into several high-risk K. pneumoniae clones (ST258, ST15, and ST101) by a common IncL/M helper plasmid, suggesting the potential of international spread. This study thus identified the international K. pneumoniae ST15 clone as a carrier of blaKPC-2 in a high-copy-number IncQ1 plasmid that is easily transmissible among other common Klebsiella strains. This finding is of concern since IncQ1 plasmids are efficient antimicrobial resistance determinant carriers across Gram-negative species. The spread of such carbapenemase-encoding IncQ1 plasmids should therefore be closely monitored.IMPORTANCE In many parts of the world, carbapenem resistance is a serious public health concern. In Brazil, carbapenem resistance in Enterobacterales is mostly driven by the dissemination of KPC-2-producing K. pneumoniae clones. Despite being endemic in this country, only a few reports providing both clinical and genomic data are available in Brazil, which limit the understanding of the real clinical impact caused by the dissemination of different clones carrying blaKPC-2 in Brazilian hospitals. Although several of these KPC-2-producer K. pneumoniae isolates belong to the clonal complex 258 and carry Tn4401 transposons located on large plasmids, a concomitant emergence and silent dissemination of small high-copy-number blaKPC-2 plasmids are of importance, as described in this study. Our data identify a small high-copy-number IncQ1 KPC plasmid, its clinical relevance, and the potential for conjugative transfer into several K. pneumoniae isolates, belonging to different international lineages, such as ST258, ST101, and ST15.


Assuntos
Farmacorresistência Bacteriana Múltipla/genética , Infecções por Klebsiella/microbiologia , Klebsiella pneumoniae/genética , Plasmídeos/genética , beta-Lactamases/genética , Idoso , Idoso de 80 Anos ou mais , Bacteriemia/microbiologia , Elementos de DNA Transponíveis , DNA Bacteriano/genética , Humanos , Infecções por Klebsiella/sangue , Klebsiella pneumoniae/classificação , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Estudos Retrospectivos , Centros de Atenção Terciária , Sequenciamento Completo do Genoma
11.
Clin Infect Dis ; 71(7): e141-e150, 2020 10 23.
Artigo em Inglês | MEDLINE | ID: mdl-31712802

RESUMO

BACKGROUND: Carbapenemase-producing Klebsiella pneumoniae has become a global priority, not least in low- and middle-income countries. Here, we report the emergence and clinical impact of a novel Klebsiella pneumoniae carbapenemase-producing K. pneumoniae (KPC-KP) sequence type (ST) 16 clone in a clonal complex (CC) 258-endemic setting. METHODS: In a teaching Brazilian hospital, a retrospective cohort of adult KPC-KP bloodstream infection (BSI) cases (January 2014 to December 2016) was established to study the molecular epidemiology and its impact on outcome (30-day all-cause mortality). KPC-KP isolates underwent multilocus sequence typing. Survival analysis between ST/CC groups and risk factors for fatal outcome (logistic regression) were evaluated. Representative isolates underwent whole-genome sequencing and had their virulence tested in a Galleria larvae model. RESULTS: One hundred sixty-five unique KPC-KP BSI cases were identified. CC258 was predominant (66%), followed by ST16 (12%). The overall 30-day mortality rate was 60%; in contrast, 95% of ST16 cases were fatal. Patients' severity scores were high and baseline clinical variables were not statistically different across STs. In multivariate analysis, ST16 (odds ratio [OR], 21.4; 95% confidence interval [CI], 2.3-202.8; P = .008) and septic shock (OR, 11.9; 95% CI, 4.2-34.1; P < .001) were independent risk factors for fatal outcome. The ST16 clone carried up to 14 resistance genes, including blaKPC-2 in an IncFIBpQIL plasmid, KL51 capsule, and yersiniabactin virulence determinants. The ST16 clone was highly pathogenic in the larvae model. CONCLUSIONS: Mortality rates were high in this KPC-KP BSI cohort, where CC258 is endemic. An emerging ST16 clone was associated with high mortality. Our results suggest that even in endemic settings, highly virulent clones can rapidly emerge demanding constant monitoring.


Assuntos
Infecções por Klebsiella , Klebsiella pneumoniae , Adulto , Antibacterianos , Proteínas de Bactérias/genética , Brasil/epidemiologia , Humanos , Infecções por Klebsiella/epidemiologia , Klebsiella pneumoniae/genética , Tipagem de Sequências Multilocus , Estudos Retrospectivos , beta-Lactamases/genética
13.
Infect Control Hosp Epidemiol ; 37(8): 991-993, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27072598

RESUMO

In this retrospective study, we compared automated surveillance with conventional surveillance to detect surgical site infection after primary total hip or knee arthroplasty. Automated surveillance demonstrated better efficacy than routine surveillance in SSI diagnosis, sensitivity, and predictive negative value in hip and knee arthroplasty. Infect Control Hosp Epidemiol 2016;37:991-993.


Assuntos
Artroplastia de Quadril , Artroplastia do Joelho , Automação , Vigilância da População/métodos , Complicações Pós-Operatórias/microbiologia , Infecção da Ferida Cirúrgica/diagnóstico , Brasil/epidemiologia , Infecção Hospitalar/diagnóstico , Feminino , Humanos , Masculino , Estudos Retrospectivos
14.
Am J Infect Control ; 43(1): 10-5, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25564118

RESUMO

BACKGROUND: Hand hygiene (HH) is the main tool for cross-infection prevention, but adherence to guidelines is low in limited-resource countries, and there are not available published data from Brazil. METHODS: This is an observational, prospective, interventional, before-and-after study conducted in 4 intensive care units in 4 hospitals, which are members of the International Nosocomial Infection Control Consortium (INICC), from June 2006-April 2008. The study was divided into a 3-month baseline period and a follow-up period. A multidimensional HH approach was introduced, which included administrative support, supplies availability, education and training, reminders in the workplace, process surveillance, and performance feedback. Health care workers were observed for HH practices in each intensive care unit during randomly selected 30-minute periods. RESULTS: We recorded 4,837 opportunities for HH, with an overall HH compliance that increased from 27%-58% (P < .01). Multivariate analysis showed that some variables were associated with poor HH compliance: men versus women (49% vs 38%, P < .001), nurses versus doctors (55% vs 48%, P < .02), among others. CONCLUSIONS: With the implementation of the INICC approach, adherence to HH was significantly increased. Programs should be aimed at improving HH in variables found to be predictors of poor HH compliance.


Assuntos
Infecção Hospitalar/prevenção & controle , Fidelidade a Diretrizes , Higiene das Mãos/métodos , Controle de Infecções/métodos , Terapia Comportamental , Brasil/epidemiologia , Cidades , Infecção Hospitalar/epidemiologia , Feminino , Hospitais , Humanos , Unidades de Terapia Intensiva , Masculino , Estudos Prospectivos , Resultado do Tratamento
15.
Braz. j. infect. dis ; 18(6): 660-663, Nov-Dec/2014. tab
Artigo em Inglês | LILACS | ID: lil-730411

RESUMO

During the past decade, studies on the composition of human microbiota and its relation to the host became one of the most explored subjects of the medical literature. The development of high-throughput molecular technologies allowed a deeper characterization of human microbiota and a better understanding of its relationship with health and disease. Changes in human habits including wide use of antimicrobials can result in dysregulation of host–microbiome homeostasis, with multiple consequences. The purpose of this review is to highlight the most important evidence in the literature of host–microbiome interactions and illustrate how these intriguing relations may lead to new treatment and prevention strategies.


Assuntos
Humanos , Trato Gastrointestinal/microbiologia , Interações Hospedeiro-Patógeno/fisiologia , Microbiota/fisiologia
16.
Braz J Infect Dis ; 18(6): 660-3, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24835619

RESUMO

During the past decade, studies on the composition of human microbiota and its relation to the host became one of the most explored subjects of the medical literature. The development of high-throughput molecular technologies allowed a deeper characterization of human microbiota and a better understanding of its relationship with health and disease. Changes in human habits including wide use of antimicrobials can result in dysregulation of host-microbiome homeostasis, with multiple consequences. The purpose of this review is to highlight the most important evidence in the literature of host-microbiome interactions and illustrate how these intriguing relations may lead to new treatment and prevention strategies.


Assuntos
Trato Gastrointestinal/microbiologia , Interações Hospedeiro-Patógeno/fisiologia , Microbiota/fisiologia , Humanos
17.
Infect Control Hosp Epidemiol ; 34(4): 415-23, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23466916

RESUMO

OBJECTIVE: To assess the feasibility and effectiveness of the International Nosocomial Infection Control Consortium (INICC) multidimensional hand hygiene approach in 19 limited-resource countries and to analyze predictors of poor hand hygiene compliance. DESIGN: An observational, prospective, cohort, interventional, before-and-after study from April 1999 through December 2011. The study was divided into 2 periods: a 3-month baseline period and a 7-year follow-up period. SETTING: Ninety-nine intensive care unit (ICU) members of the INICC in Argentina, Brazil, China, Colombia, Costa Rica, Cuba, El Salvador, Greece, India, Lebanon, Lithuania, Macedonia, Mexico, Pakistan, Panama, Peru, Philippines, Poland, and Turkey. PARTICIPANTS: Healthcare workers at 99 ICU members of the INICC. METHODS: A multidimensional hand hygiene approach was used, including (1) administrative support, (2) supplies availability, (3) education and training, (4) reminders in the workplace, (5) process surveillance, and (6) performance feedback. Observations were made for hand hygiene compliance in each ICU, during randomly selected 30-minute periods. RESULTS: A total of 149,727 opportunities for hand hygiene were observed. Overall hand hygiene compliance increased from 48.3% to 71.4% ([Formula: see text]). Univariate analysis indicated that several variables were significantly associated with poor hand hygiene compliance, including males versus females (63% vs 70%; [Formula: see text]), physicians versus nurses (62% vs 72%; [Formula: see text]), and adult versus neonatal ICUs (67% vs 81%; [Formula: see text]), among others. CONCLUSIONS: Adherence to hand hygiene increased by 48% with the INICC approach. Specific programs directed to improve hand hygiene for variables found to be predictors of poor hand hygiene compliance should be implemented.


Assuntos
Infecção Hospitalar/prevenção & controle , Países em Desenvolvimento , Fidelidade a Diretrizes/estatística & dados numéricos , Higiene das Mãos/normas , Unidades de Terapia Intensiva/normas , Recursos Humanos em Hospital/normas , Adulto , Ásia , Criança , Europa (Continente) , Estudos de Viabilidade , Feminino , Seguimentos , Higiene das Mãos/métodos , Higiene das Mãos/organização & administração , Higiene das Mãos/estatística & dados numéricos , Humanos , Recém-Nascido , Controle de Infecções/métodos , Controle de Infecções/organização & administração , Controle de Infecções/estatística & dados numéricos , Unidades de Terapia Intensiva/organização & administração , Unidades de Terapia Intensiva/estatística & dados numéricos , América Latina , Modelos Logísticos , Masculino , Oriente Médio , Análise Multivariada , Recursos Humanos em Hospital/estatística & dados numéricos , Guias de Prática Clínica como Assunto , Estudos Prospectivos
20.
Am J Infect Control ; 40(5): 396-407, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21908073

RESUMO

The results of a surveillance study conducted by the International Nosocomial Infection Control Consortium (INICC) from January 2004 through December 2009 in 422 intensive care units (ICUs) of 36 countries in Latin America, Asia, Africa, and Europe are reported. During the 6-year study period, using Centers for Disease Control and Prevention (CDC) National Healthcare Safety Network (NHSN; formerly the National Nosocomial Infection Surveillance system [NNIS]) definitions for device-associated health care-associated infections, we gathered prospective data from 313,008 patients hospitalized in the consortium's ICUs for an aggregate of 2,194,897 ICU bed-days. Despite the fact that the use of devices in the developing countries' ICUs was remarkably similar to that reported in US ICUs in the CDC's NHSN, rates of device-associated nosocomial infection were significantly higher in the ICUs of the INICC hospitals; the pooled rate of central line-associated bloodstream infection in the INICC ICUs of 6.8 per 1,000 central line-days was more than 3-fold higher than the 2.0 per 1,000 central line-days reported in comparable US ICUs. The overall rate of ventilator-associated pneumonia also was far higher (15.8 vs 3.3 per 1,000 ventilator-days), as was the rate of catheter-associated urinary tract infection (6.3 vs. 3.3 per 1,000 catheter-days). Notably, the frequencies of resistance of Pseudomonas aeruginosa isolates to imipenem (47.2% vs 23.0%), Klebsiella pneumoniae isolates to ceftazidime (76.3% vs 27.1%), Escherichia coli isolates to ceftazidime (66.7% vs 8.1%), Staphylococcus aureus isolates to methicillin (84.4% vs 56.8%), were also higher in the consortium's ICUs, and the crude unadjusted excess mortalities of device-related infections ranged from 7.3% (for catheter-associated urinary tract infection) to 15.2% (for ventilator-associated pneumonia).


Assuntos
Infecções Bacterianas/epidemiologia , Infecção Hospitalar/epidemiologia , Adolescente , Adulto , África/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Ásia/epidemiologia , Bactérias/classificação , Bactérias/isolamento & purificação , Infecções Bacterianas/mortalidade , Criança , Pré-Escolar , Infecção Hospitalar/mortalidade , Europa (Continente)/epidemiologia , Feminino , Humanos , Lactente , Recém-Nascido , Unidades de Terapia Intensiva , Cooperação Internacional , América Latina/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Adulto Jovem
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