scholarly journals Differences in Antibiotic Resistance Patterns ofEnterococcus faecalis and Enterococcus faeciumStrains Isolated from Farm and Pet Animals

2001 ◽  
Vol 45 (5) ◽  
pp. 1374-1378 ◽  
Author(s):  
Patrick Butaye ◽  
Luc A. Devriese ◽  
Freddy Haesebrouck
Keyword(s):  
Antibiotic Resistance ◽  
Broiler Chickens ◽  
Growth Promotion ◽  
Acquired Resistance ◽  
Tetracycline Resistance ◽  
Farm Animals ◽  
Glycopeptide Resistance ◽  
Resistance Patterns ◽  
Resistance Rates ◽  
Antibiotic Resistance Patterns

ABSTRACT The prevalence of acquired resistance in 146 Enterococcus faecium and 166 Enterococcus faecalis strains from farm and pet animals, isolated in 1998 and 1999 in Belgium, against antibiotics used for growth promotion and for therapy was determined. Acquired resistance against flavomycin and monensin, two antibiotics used solely for growth promotion, was not detected. Avoparcin (glycopeptide) resistance was found sporadically in E. faecium only. Avilamycin resistance was almost exclusively seen in strains from farm animals. Resistance rates were higher in E. faecium strains from broiler chickens than in strains from other animal groups with tylosin and virginiamycin and in E. faecalis as well as in E. faecium strains with narasin and bacitracin. Resistance against ampicillin was mainly found among E. faecium strains from pets and was absent inE. faecalis. Tetracycline resistance occurred most often in strains from farm animals, while enrofloxacin resistance, only found inE. faecalis, occurred equally among strains from all origins. Resistance against gentamicin was very rare in broiler strains, whereas resistance rates were high in strains from other origins. It can be concluded that resistance against antibiotics used solely for growth promotion was more prevalent in E. faecium strains than in E. faecalis strains. With few exceptions, resistance against the different categories of antibiotics was more prevalent in strains from farm animals than in those from pets.

scholarly journals Transmission of infectious drug resistance from animals to man

1973 ◽  
Vol 71 (1) ◽  
pp. 209-215 ◽  
Author(s):  
D. M. Wells ◽  
O. B. James
Keyword(s):  
Drug Resistance ◽  
Antibiotic Resistance ◽  
Antibiotic Treatment ◽  
Farm Animals ◽  
Antibiotic Resistant ◽  
R Factor ◽  
Resistance Patterns ◽  
Antibiotic Resistance Patterns ◽  
R Factors

SUMMARYThe antibiotic resistance patterns of coliforms in faecal specimens from pigs and their human contacts were studied. The ability of the resistant coliforms to transfer their resistance in vitro to antibiotic-sensitive recipients was examined. The results showed that pigs which had received antibiotics carried more multiply-resistant, R-factor bearing coliforms than pigs which had not been given antibiotics. Human contacts of the antibiotic-treated pigs had a higher incidence of antibiotic-resistant coliforms with R-factors than human contacts of pigs which had not been given antibiotics. It is concluded that antibiotic treatment of farm, animals may lead to acquisition of antibiotic resistance by gut coliforms of man.

scholarly journals Antibiotic Resistance Pattern of Staphylococcus Aureus Isolated From Pediatrics With Ocular Infections: A 6-Year Hospital-Based Study in China

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiao-Yu Zheng ◽  
Bonnie Nga Kwan Choy ◽  
Ming-Ming Zhou ◽  
Zheng-Yan Zhao
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Resistance ◽  
Resistance Rate ◽  
Resistance Pattern ◽  
Ocular Infection ◽  
Ocular Infections ◽  
Resistance Patterns ◽  
Mrsa Infection ◽  
Resistance Rates ◽  
Antibiotic Resistance Patterns

Staphylococcus aureus (S. aureus) is an important pathogen of ocular infections in pediatrics. The study aimed to identify the prevalence and resistance pattern of S. aureus, especially methicillin-resistant S. aureus (MRSA), in Chinese children with ocular infections. All patients with S. aureus infections were reviewed at a tertiary children's hospital during 2015–2020, and those with ocular infections were investigated for susceptibility results. Of 1,668 S. aureus strains, there were 177 unique isolates from ocular infection. Among them, 45 (25.4%) were MRSA and 132 (74.6%) were methicillin-sensitive S. aureus (MSSA). The proportion of MRSA did not change over time. Most of the strains were obtained from the neonate ward and ophthalmology department (n = 88, 49.7%, and n = 85, 48.0%, respectively), while eye secretion and pus were the main specimen types (n = 128, 72.3%, and n = 37, 20.9%, respectively). MRSA was significantly resistant against penicillin class (97.8%), erythromycin (71.1%), clindamycin (71.1%), and tetracycline (32.1%), with a high multidrug resistance (MDR) rate of 71.1%. However, MRSA was highly sensitive to levofloxacin. Resistance rates against erythromycin and ciprofloxacin as well as MDR percentage all increased among MSSA in children above 1 year of age, ophthalmology department, and outpatient population and decreased in eye secretion specimen. The mean resistance percentage remained stable for MRSA and MSSA during the study period. The survey of ocular S. aureus pathogens in pediatrics and their antibiotic resistance patterns helps in clinical treatment. MRSA with many strains demonstrating MDR is highly prevalent in children with ocular infections in Southeast China. Levofloxacin is an effective topical antibiotic for ocular MRSA infection, while erythromycin has a high resistance rate. The antibiotic resistance patterns of MRSA and MSSA differs and varies by different stratifications. A cautious use of antibiotics should be considered.

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 Current Antibiotic Resistance Trends of Uropathogens in Central Europe: Survey from a Tertiary Hospital Urology Department 2011–2019

Antibiotics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 630 ◽  
Author(s):  
Jan Hrbacek ◽  
Pavel Cermak ◽  
Roman Zachoval
Keyword(s):  
Antibiotic Resistance ◽  
Central Europe ◽  
Antimicrobial Agents ◽  
Pathogen Resistance ◽  
Tertiary Hospital ◽  
Tertiary Referral Centre ◽  
Enterococcus Spp ◽  
Resistance Patterns ◽  
Resistance Rates ◽  
Antibiotic Resistance Patterns

Monitoring of pathogen resistance profiles is necessary to guide empirical antibiotic therapy before culture and sensitivity results become available. The aim of this study was to describe current antibiotic resistance patterns of five most frequent causative uropathogens in a Department of Urology of a tertiary referral centre in Central Europe over a period of nine years. The Hospital Department of Clinical Microbiology database was used to extract data on all positive urine samples from inpatients in the Department of Urology between 2011 and 2019. Numbers of susceptible and resistant isolates per year were calculated for five most frequent uropathogens: Escherichia coli, Enterococcus spp., Klebsiella spp., Pseudomonas aeruginosa, and Proteus spp. Antimicrobial agents selected for the survey included: ampicillin, amoxicillin/clavulanic acid, piperacillin/tazobactam; cefuroxime, cefotaxime, ceftazidime and cefepime; ciprofloxacin and ofloxacin; gentamicin and amikacin; ertapenem, meropenem and imipenem; trimethoprim-sulfamethoxazole (co-trimoxazole), nitrofurantoin, colistin, and vancomycin. High resistance rates of Gram-negative uropathogens were demonstrated to most common antimicrobials, with statistically significant increasing or decreasing trends in some cases. No carbapenem-resistant Enterobacteriaceae were isolated. Vancomycin-resistant Enterococcus spp. strains were rare in our population.

scholarly journals Isolation, Identification, and Antibiotic Susceptibility Testing of Salmonella from Slaughtered Bovines and Ovines in Addis Ababa Abattoir Enterprise, Ethiopia: A Cross-Sectional Study

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Abe Kebede ◽  
Jelalu Kemal ◽  
Haile Alemayehu ◽  
Solomon Habte Mariam
Keyword(s):  
Antibiotic Resistance ◽  
Susceptibility Testing ◽  
Addis Ababa ◽  
Cross Sectional Study ◽  
Farm Animals ◽  
Sectional Study ◽  
Cross Sectional ◽  
Resistance Patterns ◽  
High Level ◽  
Antibiotic Resistance Patterns

Salmonellae are ubiquitous, found in animals, humans, and the environment, a condition which facilitates transmission and cross contamination. Salmonella enterica serotypes exert huge health and economic impacts due to their virulence or carriage of antibiotic resistance traits. To address this significant issues with regard to public health, availability of adequate information on the prevalence and antibiotic resistance patterns of Salmonella, and establishment of adequate measures to control contamination and infection are needed. A cross-sectional study was conducted to assess the level of Salmonella infection in slaughtered bovines and ovines at Addis Ababa abattoir. Samples were collected randomly and processed for identification and antimicrobial susceptibility testing of Salmonella spp. From 280 animals examined, 13 (4.64%) (8 bovines and 5 ovines) were positive, with most samples (12/13, 92%) comprising Salmonella Dublin. Very high level of resistance to some antibiotics used in human medicine was detected. Most isolates were susceptible to gentamycin and amikacin. Nine (69%) of all isolates were resistant to multiple antibiotics. Serotyping revealed 12 of 13 isolates to be of the Dublin serotype with 9,12:g,p:- antigenic formula. This study emphasizes the importance of improving the evisceration practice during slaughtering and restricting the use of antibiotics in farm animals.

scholarly journals Differential Etiological Profiles and Antibiotic Resistance Patterns of Urinary Tract Infection Among Different Age Categories: A Retrospective Study from a Tertiary General Hospital During a 12-Year Period

2021 ◽  
Author(s):  
Lei Huang ◽  
Chenwei Huang ◽  
Yan Yan ◽  
Liying Sun ◽  
Haixia Li
Keyword(s):  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Urinary Tract ◽  
Klebsiella Pneumoniae ◽  
General Hospital ◽  
Enterococcus Faecalis ◽  
Enterococcus Faecium ◽  
Resistance Patterns ◽  
Resistance Rates ◽  
Antibiotic Resistance Patterns

Abstract Background: Urinary tract infections (UTIs) are among the most common infections worldwide. With continuing trends of antibiotic resistance, the etiological distribution and antibiotic susceptibility surveillance are of great importance for empirical antimicrobial therapy. However, the data may change with different ages. The aim of this study was to compare the etiological profiles and antibiotic resistance patterns of UTIs sorted by different age categories from a tertiary general hospital during a 12-year period.Methods: All positive urine culture results from non-repetitive UTI patients in our hospital from January 2009 to December 2020 were collected retrospectively. The microbial distribution and antibiotic resistance rates were analyzed by WHONET 5.6 software. The etiological profiles sorted by different age categories (newborn, pediatric, adult, and geriatric) and antibiotic resistance rates of the top 5 pathogens were analyzed.Results: A total of 13308 non-repetitive UTI patients were included in our study. Enterococcus faecium was dominant in newborn, and replaced by Escherichia coli in other age categories. The etiological profiles of different age categories were divergent, sorted by genders (male and female) and ward types (outpatient, in-patient, ICU, and emergency). Escherichia coli, Klebsiella pneumoniae, Enterococcus faecalis, Enterococcus faecium, and Pseudomonas aeruginosa were the top 5 pathogens in all age categories. The resistance rates of cefperazone-sulbactam and piperacillin-tazobactam in Escherichia coli were low in all age categories. The resistance rates of cephalosporins, carbapenems, and fluoroqinolones in Klebsiella pneumoniae were higher in geriatric patients overall. Enterococcus faecium was more resistant than Enterococcus faecalis in all age categories.Conclusions: The UTI etiological profiles and antibiotic resistance patterns were divergent among different age categories, thus different empirical antibiotic therapies should be considered for different ages.

scholarly journals Antibiotic Resistance Patterns and Distribution of Ampc β-Lactamases Genes Among Acinetobacter Baumannii Clinical Isolates from Hospitals of Tehran, Iran

2021 ◽  
Author(s):  
Sajad Alizadeh ◽  
Majid Baserisalehi ◽  
Nima Bahador
Keyword(s):  
Antibiotic Resistance ◽  
Acinetobacter Baumannii ◽  
Resistance Rate ◽  
Clinical Samples ◽  
Common Cause ◽  
Gram Negative ◽  
High Prevalence ◽  
Resistance Patterns ◽  
Resistance Rates ◽  
Antibiotic Resistance Patterns

Abstract Background Acinetobacter is a Gram-negative coccobacilli bacterium that can produce severe and different infections. Among the species of these bacteria, Acinetobacter baumannii is the most common cause of nosocomial infections. Due to the high prevalence of antibiotic resistance in this bacterium and the significant increase in antibiotic resistance, this study was conducted to investigate the antibiotic susceptibility of A. baumannii isolates from Iran. A total of 60 A. baumannii bacteria were isolated from the different clinical samples in hospitals of Tehran, Iran. The isolates susceptibility to 13 commonly used antibiotics was examined according to the Clinical & Laboratory Standards Institute (CLSI) guidelines. Using PCR, three important AmpC β-lactamases relayed genes (DHA, CIT and MOX) were detected. Results The highest and lowest resistance rate was related to ampicillin (98.3%) colistin (35%), respectively. Of 60 isolates, 59 isolates (98.34%) were resistant to more than 8 antibiotics. The frequencies of DHA, CIT and MOX genes were 1 (2%), 7 (12%), 27 (46%), respectively. Based on definition, 59 (88.33%), 44 (73.33%) and 13 (21.66%) isolates were MDR, XDR and PDR, respectively. Twenty-four isolates (40%) were negative for all three genes. There was a significant relationship between the presence of MOX gene and antibiotic resistance. Conclusions The high resistance rates of the A. baumannii isolates reported in the present study is alarming and need the management of treatment such as performing of antibiogram test before antibiotic therapy for select the appropriate antibiotic and also completes the course of treatment period.

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