scholarly journals 1439. High Rates of Drug Resistance in Escherichia coli from a Pilot Antimicrobial Resistance Surveillance System in Cambodia

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S723-S724
Author(s):  
Vandarith Nov ◽  
Darapheak Chau ◽  
Chhorvann Chhea
Keyword(s):  
Public Health ◽  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Resistance ◽  
Blood Culture ◽  
Klebsiella Pneumoniae ◽  
Surveillance System ◽  
Methicillin Resistance ◽  
Salmonella Typhi ◽  
Blood Samples

Abstract Background Antimicrobial resistance (AMR) is a major and growing global public health problem. The Cambodia Ministry of Health established a pilot laboratory-based AMR surveillance system for blood specimens in 2017. The objective of this study is to characterize AMR among pathogenic isolates from blood samples. Methods A retrospective analysis was performed using one year of data from a pilot AMR Surveillance system in Cambodia. Four blood culture isolate pathogens were included: Escherichia coli, Klebsiella pneumoniae, Salmonella Typhi /Salmonella Paratyphi A and Staphylococcus aureus. Blood culture isolates that were referred from eleven sentinel sites were analyzed at the National Public Health Laboratory for identification. Antibiotic susceptibility testing (AST) was done using disk diffusion, minimum inhibitory concentration method following Clinical Laboratory Standard Institute (CLSI) guidelines. Results Among 214 pathogenic isolates from blood samples, E.coli was the most common (56.1%), followed by Salmonella Typhi/Salmonella Paratyphi A (18.7%), Staphylococcus aureus (13.5%), and Klebsiella pneumoniae (11.7%). Methicillin Resistance Staphylococcus aureus (MRSA) was detected in half of the isolates. E.coli was resistant to ampicillin (94.4%), trimethoprim-sulfamethoxazole (84.5%), and ceftriaxone (79.2%). Salmonella Typhi was resistant to ampicillin (73.3%) and trimethoprim-sulfamethoxazole (60.0%) and Salmonella Paratyphi A were resistant to fluoroquinolones (91.7%). For last resort antibiotics, E.coli was resistant to carbapenem groups (3.2% for imipenem, 4.9% for meropenem, and 5.0% for ertapenem). Klebsiella pneumoniae was not resistant to any groups. Conclusion E.coli was found at high rates in blood samples and was resistant to common antibiotics used in Cambodia. These pilot data show the importance of establishing a national AMR surveillance system in Cambodia to monitor AMR trends following GLASS guidelines. Disclosures All Authors: No reported disclosures

scholarly journals Bacterial aerobic Bacteraemia at AL- Kindi Teaching Hospital 2007-2009: Etiology diversity, Clinical features, and Outcome.

2012 ◽  
Vol 6 (1) ◽  
pp. 3-9
Author(s):  
Suzan I. Majeed ◽  
Khawlah J. Khalaf ◽  
Mazin K. Ameen
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Clinical Features ◽  
Teaching Hospital ◽  
Blood Stream ◽  
Salmonella Typhi ◽  
Blood Stream Infections ◽  
Blood Samples

Data regarding the incidence, etiology and outcome of Bacteraemia taken from AL-Kindi hospital were collected, and compared the situation between the three years: 2007, 2008, 2009. A total number of blood samples was (505), from this number only (70) (13.8%) is positive. The rate of positivity was significant greater in 2009 (17.7%) than 2008 (11.8%) and 2007 (9.1%). The calculated incidence of significant episodes of bacteraemia was 12.6% .The five most commonly isolated microorganisms were: Salmonella typhi30(46.8%), Staphylococcus aureus 12 (18.7%), Escherichia coli 10 (15.6%),Klebsiella 4(6.2%) and Enterobacter sp.3(4.6%) varied throughout this period, significant increase was noted in 2009. The acquisition of blood stream infections was nosocomial in 8.5% of cases.60% of Salmonella typhi were Amoxicillin resistant. Also Staph.aureus isolates, 58%were resistant to Amoxicillin and Erythromycin. Cephalexin-resistant E.coli in70% of the isolates and Gentamycin-resistant Klebsiella occurred in 75% of the isolates. The incidence of BSI did not differ significantly from other reported studies.

scholarly journals Pengujian Aktivitas Antibakteri Ekstrak Kulit Ranting Sengon Dengan Pelarut Metanol Dan N-Heksana

2020 ◽  
Vol 3 (1) ◽  
pp. 6-15
Author(s):  
Nunik Tri Rahayu ◽  
Ai Sri Nurhasanah ◽  
Alfi Rumidatul ◽  
Feldha Fadhila ◽  
Yayan Maryana
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Klebsiella Pneumoniae ◽  
Proteus Mirabilis ◽  
Salmonella Typhi

Pohon Sengon (Falcataria moluccana) memiliki senyawa metabolit sekunder yaitu terpenoid, steroid, flavonoid, fenolik, tanin, saponin yang berfungsi sebagai antibakteri. Antibakteri bersumber dari alam menjadi alternatif untuk pengobatan penyakit infeksi. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri ekstrak kulit ranting Sengon dengan pelarut n-heksana dan metanol terhadap Shigella dysentriae, Klebsiella pneumoniae, Escherichia coli, Salmonella typhi, Staphylococcus aureus, Pseudomonas aeruginosa, dan Proteus mirabilis. Penelitian ini menggunakan metode Kirby Bauer dengan konsentrasi ekstrak 9%, 9,5%, 10%, 10,5% dan 11%. Hasil ekstrak kulit ranting Sengon menunjukkan adanya zona bening dengan konsentrasi efektif yaitu 11% terhadap Shigella dysentriae (4 mm), Escherichia coli (1,7 mm), Salmonella typhi (3,3 mm). Sedangkan ekstrak kulit ranting Sengon dengan pelarut n-heksana terhadap Proteus mirabillis (2,7 mm). Ekstrak kulit ranting Sengon dengan pelarut metanol dan n-heksana memiliki aktivitas antibakteri terhadap Shigella dysentriae, Escherichia coli, Salmonella typhi, dan Proteus mirabilis. Kata kunci: Antibakteri, Falcataria moluccana, N-heksana, Metanol

scholarly journals Antimicrobial Susceptibility Pattern of Bacterial Isolates from Surgical Site Infections in a Tertiary Care Hospital

2021 ◽  
Vol 10 (11) ◽  
pp. 369-375
Author(s):  
Anusuya Devi Devaraju S. Latha Roy
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Klebsiella Pneumoniae ◽  
Antimicrobial Susceptibility ◽  
Methicillin Resistance ◽  
Surgical Site Infections ◽  
Cost Of Care ◽  
Esbl Production ◽  
Susceptibility Patterns

Background Surgical site infections are ranked among the most common health care associated infections. They cause significant morbidity, increased cost of care and prolonged hospital stay. A spectrum of microorganisms with varied antimicrobial susceptibility patterns have been identified as causative agents of SSI which vary with time, hospital, and with the type of surgical procedure performed. We conducted this study with an objective to assess the burden of SSI, its causative aerobic bacteria and their in vitro antibiotic susceptibility patterns. Aims & objectives 1) To identify the aerobic bacteriological profile of isolates causing surgical site infections. 2) To determine the antibiotic sensitivity pattern of the isolates. Method: This study includes 266 clinically diagnosed cases of SSIs over a period of 8 months. Isolates were identified by conventional methods. Isolates of Staphylococcus aureus were tested for methicillin resistance by cefoxitin. Isolates of Escherichia coli and Klebsiella pneumoniae which showed resistance to cefotaxime and ceftazidime were tested for ESBL production by CLSI guidelines. Isolates of Pseudomonas aeruginosa were screened for MBL production using Imipenem disc diffusion test. Results of the 266 samples processed, 193(72.5%) were culture positive samples which yielded 204 isolates. Staphylococcus aureus 60 (29.4%) was found to be the predominant organism causing SSI followed by Pseudomonas aeruginosa 40 (19.6%). Methicillin resistance was observed in 12 (20%) of Staphylococcus aureus strains. ESBL production was observed in 20.5% of Klebsiella pneumoniae isolates and 13.2 % Escherichia coli isolates. MBL production was not seen Pseudomonas aeruginosa isolates. Conclusion: The present study showed the commonest bacteria responsible for the surgical site infections like Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli. Hence Implementation of an effective infection control programme and judicious use of antibiotic prophylaxis reduces the incidence of SSI in the hospital.

scholarly journals Surveillance of antimicrobial resistance of invasive pathogens: the Estonian experience

2006 ◽  
Vol 11 (2) ◽  
pp. 9-10 ◽  
Author(s):  
K Loivukene ◽  
K Kermes ◽  
E Sepp ◽  
V Adamson ◽  
P Mitt ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Resistance ◽  
Surveillance System ◽  
Gram Negative ◽  
E Coli ◽  
Invasive Pathogens ◽  
Susceptibility Data ◽  
Antimicrobial Resistance Surveillance ◽  
Klebsiella Spp

The aim of the present study was to evaluate the needs for surveillance of invasive Gram-negative pathogens in Estonia. The antimicrobial susceptibility data of invasive isolates of Acinetobacter baumannii, Pseudomonas aeruginosa, Klebsiella spp, Escherichia coli, Staphylococcus aureus, Streptococcus pneumoniae and enterococci were collected in accordance with EARSS (European Antimicrobial Resistance Surveillance System) protocols. Despite the higher rate of Gram positive pathogens, their resistance to antimicrobials was low in contrast to the elevated resistance established for Gram negative pathogens. The higher resistance to antimicrobials was particularly associated with A. baumannii and P. aeruginosa. Also, the proportion of extended spectrum betalactamase (ESBL)-producing strains was 23% among Klebsiella spp. and 3.6% among E. coli. The inclusion of invasive Gram negative pathogens in antimicrobial resistance surveillance provides useful information concerning local pathogen susceptibility, as well as for the empirical treatment of suspected infections.

scholarly journals Evaluación antimicrobiana de un extracto metanólico de Beauveria bassian a contra bacterias patógenas de importancia nosocomial

2019 ◽  
Vol 60 (3) ◽  
Author(s):  
Jesús Manuel Villegas-Mendoza ◽  
Ninfa M. Rosas-García ◽  
Maribel Mireles-Martínez ◽  
Rubén Santiago-Adame ◽  
Guadalupe C. Rodríguez-Castillejos ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Klebsiella Pneumoniae ◽  
Acinetobacter Baumannii ◽  
Beauveria Bassiana ◽  
Salmonella Typhi

Objetivo: Se evaluó la actividad antimicrobiana de un extracto crudo de B. bassiana y dos fracciones del mismo contra bacterias de importancia clínica. Métodos: El micelio de cepa B. bassiana se remojó en metanol durante una semana, después se evaporo en un rotovapor a 45°C aplicando vacío. El extracto metanólico se hizo pasar con dos fases móviles para obtener una fracción A y B. La fracciones A, B y el extracto crudo C se evaluaron contra las cepas Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Salmonella tiphy, Pseudomonas aeruginosa y Acinetobacter baumannii con la técnica de microdilución en placa. Resultados: En la fracción A se observó un efecto antimicrobiano contra Salmonella typhi, Pseudomonas aeruginosa y Acinetobacter baumannii el crecimiento bacteriano alcanzó el 70, 60 y 83 % respectivamente. La fracción B causó un efecto antimicrobiano en Klebsiella pneumoniae, S. typhi, P. aeruginosa y A. baumannii con un crecimiento bacteriano del 62, 58, 41 y 7 % respectivamente. Y El extracto crudo no causó inhibición del crecimiento en A. baumannii, pero para el resto de la bacterias hubo un crecimiento del 56 al 88 %. Conclusiones: Beauveria bassiana es un hongo entomopatógeno que produce diferentes metabolitos con actividad insecticida, citotóxica, antifúngica, antibiótica y antiviral. Este es el primer estudio de los efectos antimicrobianos de un extracto metanólico del hongo entomopatógeno B. bassiana contra cepas bacterianas de importancia clínica.

scholarly journals Hybrid Assembly Provides Improved Resolution of Plasmids, Antimicrobial Resistance Genes, and Virulence Factors in Escherichia coli and Klebsiella pneumoniae Clinical Isolates

2021 ◽  
Vol 9 (12) ◽  
pp. 2560
Author(s):  
Abdolrahman Khezri ◽  
Ekaterina Avershina ◽  
Rafi Ahmad
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Blood Culture ◽  
Klebsiella Pneumoniae ◽  
Virulence Factors ◽  
Whole Genome Sequence ◽  
Clinical Samples ◽  
Hybrid Assembly ◽  
Antimicrobial Resistance Genes ◽  
Quality Checks

Emerging new sequencing technologies have provided researchers with a unique opportunity to study factors related to microbial pathogenicity, such as antimicrobial resistance (AMR) genes and virulence factors. However, the use of whole-genome sequence (WGS) data requires good knowledge of the bioinformatics involved, as well as the necessary techniques. In this study, a total of nine Escherichia coli and Klebsiella pneumoniae isolates from Norwegian clinical samples were sequenced using both MinION and Illumina platforms. Three out of nine samples were sequenced directly from blood culture, and one sample was sequenced from a mixed-blood culture. For genome assembly, several long-read, (Canu, Flye, Unicycler, and Miniasm), short-read (ABySS, Unicycler and SPAdes) and hybrid assemblers (Unicycler, hybridSPAdes, and MaSurCa) were tested. Assembled genomes from the best-performing assemblers (according to quality checks using QUAST and BUSCO) were subjected to downstream analyses. Flye and Unicycler assemblers performed best for the assembly of long and short reads, respectively. For hybrid assembly, Unicycler was the top-performing assembler and produced more circularized and complete genome assemblies. Hybrid assembled genomes performed substantially better in downstream analyses to predict putative plasmids, AMR genes and β-lactamase gene variants, compared to MinION and Illumina assemblies. Thus, hybrid assembly has the potential to reveal factors related to microbial pathogenicity in clinical and mixed samples.

Utilization of cumulative antibiograms for public health surveillance: Trends in Escherichia coli and Klebsiella pneumoniae susceptibility, Massachusetts, 2008–2018

2020 ◽  
pp. 1-7
Author(s):  
Quynh T. Vo ◽  
R. Monina Klevens ◽  
Barbara Bolstorff ◽  
Kerri Barton ◽  
Melissa Cumming ◽  
...  
Keyword(s):  
Public Health ◽  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Klebsiella Pneumoniae ◽  
Public Health Surveillance ◽  
State Level ◽  
Health Surveillance ◽  
The State ◽  
E Coli ◽  
State And Local

Abstract Background: Antimicrobial resistance is an urgent public health threat. Identifying trends in antimicrobial susceptibility can inform public health policy at the state and local levels. Objective: To determine the ability of statewide antibiogram aggregation for public health surveillance to identify changes in antimicrobial resistance trends. Design: Facility-level trend analysis. Methods: Crude and adjusted trend analyses of the susceptibility of Escherichia coli and Klebsiella pneumoniae to particular antibiotics, as reported by aggregated antibiograms, were examined from 2008 through 2018. Multivariable regression analyses via generalized linear mixed models were used to examine associations between hospital characteristics and trends of E. coli and K. pneumoniae susceptibility to ciprofloxacin and ceftriaxone. Results: E. coli and K. pneumoniae showed inverse trends in drug susceptibility over time. K. pneumoniae susceptibility to fluoroquinolones increased by 5% between 2008 and 2018 (P < .05). In contrast, E. coli susceptibility declined during the same period to ceftriaxone (6%), gentamicin (4%), and fluoroquinolones (4%) (P < .05). When compared to Boston hospitals, E. coli isolates from hospitals in other regions had a >4% higher proportion of susceptibility to ciprofloxacin and a >3% higher proportion of susceptibility to ceftriaxone (P < .05). Isolates of K. pneumoniae had higher susceptibility to ciprofloxacin (>3%) and ceftriaxone (>1.5%) in all regions when compared to Boston hospitals (P < .05). Conclusions: Cumulative antibiograms can be used to monitor antimicrobial resistance, to discern regional and facility differences, and to detect changes in trends. Furthermore, because the number of years that hospitals contributed reports to the state-level aggregate had no significant influence on susceptibility trends, other states should not be discouraged by incomplete hospital compliance.

scholarly journals Evolution of In Vitro Antimicrobial Susceptibility of Equine Clinical Isolates in France between 2016 and 2019

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 812 ◽  
Author(s):  
Albertine Léon ◽  
Sophie Castagnet ◽  
Karine Maillard ◽  
Romain Paillot ◽  
Jean-Christophe Giard
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Resistance ◽  
Klebsiella Pneumoniae ◽  
Antimicrobial Susceptibility ◽  
Diffusion Method ◽  
Veterinary Antibiotics ◽  
Disk Diffusion Method ◽  
Animal Exposure

The present study described the evolution of antimicrobial resistance in equine pathogens isolated from 2016 to 2019. A collection of 7806 bacterial isolates were analysed for their in vitro antimicrobial susceptibility using the disk diffusion method. The most frequently isolated pathogens were group C Streptococci (27.0%), Escherichia coli (18.0%), Staphylococcus aureus (6.2%), Pseudomonas aeruginosa (3.4%), Klebsiella pneumoniae (2.3%) and Enterobacter spp. (2.1%). The majority of these pathogens were isolated from the genital tract (45.1%, n = 3522). With the implementation of two French national plans (named ECOANTIBIO 1 and 2) in 2012–2016 and 2017–2021, respectively, and a reduction in animal exposure to veterinary antibiotics, our study showed decreases in the resistance of group C Streptococci, Klebsiella pneumoniae and Escherichia coli against five classes, four classes and one class of antimicrobials tested, respectively. However, Staphylococcus aureus, Escherichia coli and Enterobacter spp. presented an increased resistance against all the tested classes, excepted for two fifths of E. coli. Moreover, the percentages of multi-drug resistant strains of Staphylococcus aureus and Enterobacter spp. also increased from 24.5% to 37.4% and from 26.3% to 51.7%, respectively. The data reported here are relevant to equine practitioners and will help to improve knowledge related to antimicrobial resistance in common equine pathogens.

scholarly journals Bacteriological Profile and Antibiotic Resistance Pattern at the Yaounde University Teaching Hospital: A Retrospective Study

2021 ◽  
pp. 1-15
Author(s):  
Daniele Sandra Yopa ◽  
Hortense Gonsu Kamga ◽  
Emmanuel Nnanga Nga ◽  
Olive Nathalie Kouamen Njikeu ◽  
Claude Stephan Ohandza ◽  
...  
Keyword(s):  
Public Health ◽  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibiotic Resistance ◽  
Klebsiella Pneumoniae ◽  
Blood Sample ◽  
Teaching Hospital ◽  
University Teaching ◽  
Age Group ◽  
Coagulase Negative Staphylococci

Aims: Over the decades, antibiotic resistance has become a cross-border public health problem. This calls for the profiling of microorganisms, particularly bacteria implicated in antibiotic resistance, in order to improve clinical practice and reduce the incidence of therapeutic failure in the treatment of infectious diseases. Study Design: We conducted a retrospective cross-sectional study. Place and Duration of the Study: The study was made at the bacteriology laboratory at the Yaounde University Teaching Hospital, Cameroon during the period between January 2016 and June 2021. Methodology: All bacterial strains from the following biological fluids were included: blood, stool, urine, suppurations, probe tip and catheter tip. The antibiotic susceptibility of isolates was collected from the registers of the said laboratory. The data were encoded in Censuses and Survey Procession Software (CSPro) version 7.3 and analysed using the Statistical Package for Social Science (SPSS) version 25. Graphs and figures were made using Excel 2016 spreadsheet software. Results: A total of 1071 bacteria were enrolled in 955 patients. The age group most represented was 0-5 years (34.6%). Most of the isolates came from a blood sample. Among the isolates, Coagulase-negative Staphylococci (18.5%), Escherichia coli (17.7%), Staphylococcus aureus (14%) and Klebsiella pneumoniae (11.2%) were the most common. A total of 1071 bacteria were enrolled in 955 patients. The age group most represented was 0-5 years (34.6%). Most of the isolates came from a blood sample. Among the isolates, Coagulase-negative Staphylococci (18.5%), Escherichia coli (17.7%), Staphylococcus aureus (14%) and Klebsiella pneumoniae (11.2%) were the most represented. Between 2016 and 2020, almost remarkable resistance was observed to the class of penicillins (78% to 83%), cephalosporins (44% to 61%) and quinolones (43% to 100%) for Escherichia coli. For Staphylococcus aureus, resistance changes range from 68% to 77% for the penicillin class. Klebsiella pneumoniae showed an evolution ranging from 11% to 19% for aminosides. Conclusion: Although not all isolates showed a change in the level of resistance to all antibiotics that are frequently used in our study population, Nevertheless, it is important for national public health actors to establish active surveillance of antibiotic and even antimicrobial resistance and to implement a guide to the proper use of antibiotics for health professionals, and the community.

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