scholarly journals Identification and Antibiotic Resistance Rates of Coagulase-Negative Staphylococci Isolated from Blood Cultures

ANKEM Dergisi ◽  
2016 ◽  
Author(s):  
Nurullah ÇİFTÇİ ◽  
Hatice TÜRKDAĞI, ◽  
Aslıhan DEMİRCAN ◽  
İnci TUNCER
Keyword(s):  
Antibiotic Resistance ◽  
Blood Cultures ◽  
Coagulase Negative Staphylococci ◽  
Resistance Rates

scholarly journals Health vigilance concerning Acinetobacter baumannii bacteremia at the mohammed VI university hospital of oujda (morocco): epidemiological profile and antibiotic resistance

2021 ◽  
Vol 319 ◽  
pp. 01003
Author(s):  
Loubna Yacoubi ◽  
Soumia Farih ◽  
Noussaiba Benhamza ◽  
Abderazzak Seddari ◽  
Adil maleb
Keyword(s):  
Antibiotic Resistance ◽  
Blood Cultures ◽  
University Hospital ◽  
Microbiology Laboratory ◽  
Prevention Measures ◽  
Control And Prevention ◽  
Epidemiological Profile ◽  
Healthcare Associated ◽  
Resistance Rates ◽  
Contaminated Blood

The objective of this work is to determine the epidemiological profile of Acinetobacter b aumannii (A.baumannii ) bacteremia in the microbiology laboratory of CHU Mohammed VI of Oujda and its antibiotic resistance rates. This is a retrospective and descriptive study of 27 months from June 24, 2016to September 19, 2018 including all positive blood cultures processed in the microbiology laboratory in accordance with REMIC (reference in medical microbiology)and EUCAST(European Committee on Antimicrobial Susceptibility Testing). Contaminated blood cultures were excluded. As results we collected 863 positive blood cultures, A. baumannii accounted for 7.41% (n = 64). 67% (n =43) of the strains were isolated from patients hospitalized in intensive care (adults, children and newborns). The two main risk factors described in patients with our series were wearing of intravascular device in 55% (n=35) Immunosuppression in 22% n=14). A. baumannii bacteremia was associated with care in 37.5% (n=24). 75% (n=48) of A. baumannii isolates were resistant to carbapenems. No strain of A. baumannii was resistant to colistin. In light of these results strengthening the control and prevention measures for healthcare associated infections would be the most reliable way to limit the spread of A. baumannii in our establishment.

scholarly journals Microorganisms Isolated from Wound Samples and Their Antibiotic Resistance Rates

ANKEM Dergisi ◽  
2021 ◽  
Author(s):  
Ezgi Köse ◽  
Emel Çalışkan ◽  
Nagihan Memiş ◽  
Betül Dönmez ◽  
Pelin Duran
Keyword(s):  
Antibiotic Resistance ◽  
Wound Infection ◽  
Antibiotic Susceptibility ◽  
Automated System ◽  
Diffusion Method ◽  
Candida Spp ◽  
Coagulase Negative Staphylococci ◽  
Pseudomonas Spp ◽  
Microbiological Methods ◽  
Resistance Rates

In this study, it was aimed to contribute to available epidemiological data and guide empirical treatment by determining the distribution and antibiotic susceptibility of pathogenic microorganisms isolated from wound samples sent to the microbiology laboratory of our hospital. The agents of wound infection sent to our laboratory between 02.01.2017 and 20.07.2020 were retrospectively analyzed. The microorganisms grown were identified by conventional microbiological methods together with automated system. Antibiotic susceptibility testing was done by Kirby-Bauer disk diffusion method and an automated system and evaluated according to EUCAST criteria. Of the 956 bacteria isolated from 722 samples, 370 (39 %) were order Enterobacterales, 286 (30 %) were Gram positive cocci, 134 (14 %) were Pseudomonas spp., 83 (9 %) were Acinetobacter baumannii and 27 (3 %) were Candida spp. Vancomycin, teicoplanin and linezolid resistance were not found in staphylococci and enterococci. The most effective antibiotic against Staphylococcus aureus was trimethoprim-sulfamethoxazole (TMP-SXT) (11 %), and gentamicin (30 %) and TMP-SXT (28 %) for coagulase negative staphylococci (CNS). Ciprofloxacin (48 %) and levofloxacin (58 %) resistance was higher in enterococci compared to other antibiotics. In addition, Klebsiella spp. strains have higher resistance rates than other Enterobacterales genus strains while A. baumannii and Pseudomonas spp. strains had the lowest resistance rate against colistin (1 %). Antibiotic resistance was higher in intensive care units than in other clinics, except for enterococci. In our study, it was observed that many species of bacteria and fungi could be an agent in wound infection, and high rates of resistance developed against antibiotics. Therefore, it was thought that the treatments should be regulated by performing culture and antibiogram procedures on all samples for which wound infection is suspected.

scholarly journals Health vigilance concerning bacteremia in neonatology - neonatal intensive care unit at the Mohammed VI University Hospital of Oujda (Morocco): epidemiological profile and antibiotic resistance

2021 ◽  
Vol 319 ◽  
pp. 01011
Author(s):  
Loubna Yacoubi ◽  
Soumia Farih ◽  
Abderazzak Seddari ◽  
Noussaiba Benhamza ◽  
Adnane Aarab ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Antibiotic Resistance ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Neonatal Intensive Care ◽  
Blood Cultures ◽  
University Hospital ◽  
Coagulase Negative Staphylococci ◽  
Hygiene Measures ◽  
Epidemiological Profile

The objective of our study was to describe the epidemiological profile of blood culture isolates in the neonatology - neonatal intensive care unit of the Mohammed VI University Hospital of Oujda (Morocco) and to specify the resistance profile of the main germs isolated to antibiotics .This is a retrospective and descriptive study of 21 months from December 14, 2016 to September 14, 2018 and covering all positive blood cultures processed in the microbiology laboratory in accordance with REMIC (reference in medical microbiology) and EUCAST (European Committee on Antimicrobial Susceptibility Testing).contaminated blood cultures were excluded. As results, we collected 275 positive blood cultures. They occurred in the context of intravascular device (IVD) use in 59% (n=162) of cases. The most isolated bacterial groups were coagulase-negative staphylococci (CNS) 41.45 %( n=114), followed by Enterobacteriaceae 32.36 %( n=89).CNS were resistant to all beta-lactams in 57.89 %( n=66), and to glycopeptides in 5.26 %( n=6). Enterobacteriaceae were producers of extended-spectrum betalactamases in 79.77% (n=71) and producers of carbapenemases in 13.48% (n=12) of cases. The alarming increase of enterobacteriaceae isolates and their antibiotic resistance rates should encourage the reinforcement of hygiene measures in our University Hospital.

scholarly journals Bacterial Contamination of Iranian Paper Currency and Their Antibiotic Resistance Patterns

2017 ◽  
Vol 5 (4) ◽  
pp. 106-110 ◽  
Author(s):  
Farzaneh Firoozeh ◽  
Ehsan Dadgostar ◽  
Hussein Akbari ◽  
Mohammad Zibaei ◽  
Seyed Mohammad Sadjjad Sadjjadian ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Bacterial Contamination ◽  
Diffusion Method ◽  
Coagulase Negative Staphylococci ◽  
Disk Diffusion Method ◽  
Paper Currency ◽  
Microbiological Methods ◽  
Resistance Patterns ◽  
Resistance Rates ◽  
Antibiotic Resistance Patterns

Background: Paper banknotes would be a vector for transmission of pathogenic microorganisms through handling. Objective: This study aimed to determine bacterial contamination of Iranian paper currencies in circulation and their antibiotic resistance patterns. Materials and Methods: In this study, 337 currency notes of different value were collected from markets, shops, restaurants, bus stations and banks in Kashan, Iran during April 2015 to March 2016. The currency notes transferred to microbiology laboratory and were tested for bacterial contamination using standard microbiological methods. Antibiotic resistance patterns of isolated bacteria were determined by disk diffusion method according to the Clinical and Laboratory Standards Institute (CLSI) standards. The results and data were analyzed using descriptive statistics. Results: Of 337 currency notes, 262 (77.7%) were identified with bacterial contamination. Bacteria isolated from currency notes were as follows: Bacillus spp 113 (43.1%), coagulase-negative staphylococci 99 (37.7%), Escherichia coli 20 (7.6%), Enterococci species 14 (5.3%), Staphylococcus aureus 8 (3.1%), Klebsiella spp 4 (1.5%), Shigella species 2 (0.8%), and Pseudomonas species 2 (0.8%). The most and least contaminated currency notes were 50000 and 500 Rials, respectively. The highest resistance rates in gram-negative rods were against nalidixic acid, and ampicillin. However, the highest resistance rates in S. aureus, coagulase-negative staphylococci and Enterococci species were against ampicillin, erythromycin and tetracycline. Conclusion: Our study revealed that the bacterial contamination among Iranian paper currency in circulation especially those obtained from certain sources including shops and bus stations is high and in most cases these bacterial isolates are antibiotic-resistant strains.

scholarly journals Antibiotic Resistance Rates in Pseudomonas aeruginosa Strains Isolated from Blood Cultures

ANKEM Dergisi ◽  
2012 ◽  
Vol 25 (2) ◽  
pp. 107-110
Author(s):  
Hatice Turk Dagi ◽  
Ugur Arslan ◽  
Duygu Findik ◽  
İnci Tuncer
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Resistance ◽  
Blood Cultures ◽  
Resistance Rates

scholarly journals The Role of Aquatic Ecosystems (River Tua, Portugal) as Reservoirs of Multidrug-Resistant Aeromonas spp.

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 698
Author(s):  
Sónia Gomes ◽  
Conceição Fernandes ◽  
Sandra Monteiro ◽  
Edna Cabecinha ◽  
Amílcar Teixeira ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Antimicrobial Resistance ◽  
Nalidixic Acid ◽  
Water Samples ◽  
Aquatic Ecosystems ◽  
Anthropogenic Activities ◽  
Aquatic Organisms ◽  
Resistant Bacteria ◽  
Anthropogenic Pressures ◽  
Resistance Rates

The inappropriate use of antibiotics, one of the causes of the high incidence of antimicrobial-resistant bacteria isolated from aquatic ecosystems, represents a risk for aquatic organisms and the welfare of humans. This study aimed to determine the antimicrobial resistance rates among riverine Aeromonas spp., taken as representative of the autochthonous microbiota, to evaluate the level of antibacterial resistance in the Tua River (Douro basin). The prevalence and degree of antibiotic resistance was examined using motile aeromonads as a potential indicator of antimicrobial susceptibility for the aquatic environment. Water samples were collected from the middle sector of the river, which is most impacted area by several anthropogenic pressures. Water samples were plated on an Aeromonas-selective agar, with and without antibiotics. The activity of 19 antibiotics was studied against 30 isolates of Aeromonas spp. using the standard agar dilution susceptibility test. Antibiotic resistance rates were fosfomycin (FOS) 83.33%, nalidixic acid (NA) 60%, cefotaxime (CTX) 40%, gentamicin (CN) 26.67%, tobramycin (TOB) 26.67%, cotrimoxazole (SXT) 26.67%, chloramphenicol (C) 16.67%, and tetracycline (TE) 13.33%. Some of the nalidixic acid-resistant strains were susceptible to fluoroquinolones. Multiple resistance was also observed (83.33%). The environmental ubiquity, the natural susceptibility to antimicrobials and the zoonotic potential of Aeromonas spp. make them optimal candidates for studying antimicrobial resistance (AMR) in aquatic ecosystems. Aquatic environments may provide an ideal setting for the acquisition and dissemination of antibiotic resistance because anthropogenic activities frequently impact them. The potential risk of multi- and pan-resistant bacteria transmission between animals and humans should be considered in a “One Health—One World” concept.

scholarly journals Virulence Factors in Coagulase-Negative Staphylococci

Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 170
Author(s):  
Angela França ◽  
Vânia Gaio ◽  
Nathalie Lopes ◽  
Luís D. R. Melo
Keyword(s):  
Antibiotic Resistance ◽  
Virulence Factors ◽  
Resistance Genes ◽  
Biofilm Formation ◽  
Antibiotic Resistance Genes ◽  
Coagulase Negative Staphylococci ◽  
Healthcare Associated ◽  
Major Pathogens

Coagulase-negative staphylococci (CoNS) have emerged as major pathogens in healthcare-associated facilities, being S. epidermidis, S. haemolyticus and, more recently, S. lugdunensis, the most clinically relevant species. Despite being less virulent than the well-studied pathogen S. aureus, the number of CoNS strains sequenced is constantly increasing and, with that, the number of virulence factors identified in those strains. In this regard, biofilm formation is considered the most important. Besides virulence factors, the presence of several antibiotic-resistance genes identified in CoNS is worrisome and makes treatment very challenging. In this review, we analyzed the different aspects involved in CoNS virulence and their impact on health and food.

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