scholarly journals Prevalence and antimicrobial resistance of Salmonella spp. isolated from chicken meat in upper northeastern Thailand

2020 ◽  
Vol 19 (2) ◽  
pp. 121-131
Author(s):  
Istiana Nur Vidayanti ◽  
◽  
Peerapol Sukon ◽  
Seri Khaengair ◽  
Chaiwat Pulsrikarn ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
High Resistance ◽  
Antimicrobial Susceptibility ◽  
Chicken Meat ◽  
Foodborne Disease ◽  
Salmonella Spp ◽  
The World ◽  
Khon Kaen ◽  
High Level ◽  
Northeastern Thailand

Foodborne disease associated with Salmonella spp. occurs in some parts of the world, including Thailand. The present study aimed to determine prevalence, antimicrobial resistance, and serotypes of Salmonella spp. isolated from chicken meat in upper northeastern Thailand. A total of 326 swab samples of fresh chicken meat were collected from wet markets in Khon Kaen, U-don Thani, Nong Khai, Loei, Kalasin, Maha Sarakham, and Bueng Kan Provinces, northeastern Thailand, between August and November 2019. All samples were analyzed for Salmonella spp. using the ISO 6579:2002/AMD 1:2007 method. The isolates were tested for antimicrobial susceptibility using the Kirby-Bauer method, and the serotypes of isolates positive were identified. The overall prevalence of Salmonella spp. isolated from chicken meat was 36.2% (118/326), and prevalence in the provinces was as follows: U-don Thani, 70.9%; Bueng Kan, 66.67%; Khon Kaen, 45.9%; Kalasin, 31.25%; Nong Khai, 29.8%; Maha Sarakham, 26.42% and Loei, 12.5%. Resistance was highest for nalidixic acid at 31%, followed by ampicillin (24%), tetracycline (19%), sulfamethoxazole trimethoprim (8%), norfloxacin (5%), ciprofloxacin (4%), amoxicillin (4%), and chloramphenicol (1%). However, all isolates were susceptible to ceftazidime. Twenty-seven serotypes were detected, with the Corvallis, Singapore, Kentucky and Agona serotypes being the most common. Salmonella spp. were detected in a large percentage of the swab samples of chicken meat in every city, indicating a high level of contamination of chicken meat. Given the high resistance of Salmonella strains to some antibiotics, it may be beneficial to find other drugs for salmonellosis treatment and to use antibiotics more wisely.

scholarly journals Prevalence and Antimicrobial Resistances of Salmonella spp. Isolated from Wild Boars in Liguria Region, Italy

Pathogens ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 568
Author(s):  
Elisabetta Razzuoli ◽  
Valeria Listorti ◽  
Isabella Martini ◽  
Laura Migone ◽  
Lucia Decastelli ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Wild Boar ◽  
Antimicrobial Susceptibility ◽  
Potential Risk ◽  
Salmonella Enterica ◽  
Intestinal Tract ◽  
Wild Boar Population ◽  
Salmonella Spp ◽  
Wild Boars ◽  
In The Wild

Salmonella spp. is an important zoonotic agent. Wild boars might host this pathogen in the intestinal tract and might represent a risk for Salmonella spp. transmission to humans. Wild boars are widely spread in Liguria, due to the environmental characteristics of the region. The aim of the study was the isolation, typing, and investigation of antimicrobial susceptibility of the isolated strains of Salmonella spp. During the 2013–2017 hunting seasons, 4335 livers of wild boars were collected and analyzed for the presence of Salmonella spp. A total of 260 strains of Salmonella spp. were isolated and characterized, with a prevalence of 6%. The isolated strains belonged to all six Salmonella enterica subspecies. Most of them were identified as Salmonella enterica subs. enterica of which 31 different serotypes were identified. The dominating serotype identified was S. Enteritidis. The antimicrobial resistance profiles of the isolated strains were analyzed against sixteen molecules. Of the isolated strains, 94.6% were resistant to at least one of the tested antimicrobials. This study showed the circulation of resistant Salmonella spp. strains in the wild boar population living in this area of Italy, underling the potential risk for these animals to disseminate this pathogen and its antimicrobial resistances.

scholarly journals A Comprehensive Review on Current Progressions in Combating The Antimicrobial Resistance

2020 ◽  
Vol 11 (2) ◽  
pp. 1493-1504
Author(s):  
Bharatlal Sain ◽  
Manohar M ◽  
Gowda D V
Keyword(s):  
Photodynamic Therapy ◽  
Antimicrobial Resistance ◽  
Antimicrobial Susceptibility ◽  
Biofilm Formation ◽  
Susceptibility Testing ◽  
Persister Cells ◽  
Comprehensive Review ◽  
Obligate Intracellular ◽  
Competitive Inhibitors ◽  
The World

Anti-microbial resistance (AMR) is the ability of a microbe to resist the effect of antibiotics. It has become the most important cause of concern throughout the world. AMR may develop a variety of mechanisms, including resistance, weakness or due to a certain therapeutic failure. The three major causes of resistance were identified to be over usage of anti-microbials, over-prescription, increased agricultural usage. The mechanism which leads to the development of AMR were found to be Metabolic Inactive Persister cells biofilm formation, Swarming, Obligate intracellular microbes, Reduced uptake and efflux pumps, Modification of the antibiotic binding site, Production of competitive inhibitors. Research is still being carried out and few methods successfully  delay or inhibit the progress of Resistance namely: Photodynamic therapy, which works on the principle of photosensitization, results in formation of ROS which destroy pathogenic cells, Vaccines, which strengthen the defence system to fight against foreign microorganisms efficiently, Antibiotic adjuvants, work by inhibiting any kind of mechanism related to the resistance increasing the drug’s antibacterial efficiency, Nano antibiotics which acts by interfering with the mechanisms for the development of the resistance and microfluidics give a better understanding of the bacteria and its superior antimicrobial susceptibility testing. Hence, in this review the above mechanisms of antimicrobial resistance as well the latest AMR combating strategies are been discussed.

scholarly journals Resistance profile to antimicrobials of Salmonella spp. isolated from human infections

2004 ◽  
Vol 47 (2) ◽  
pp. 193-197 ◽  
Author(s):  
Elaine Regina Delicato ◽  
Jane Martha Graton Mikcha ◽  
Sueli Aparecida Fernandes ◽  
Jacinta Sanchez Pelayo
Keyword(s):  
Public Health ◽  
Antimicrobial Resistance ◽  
High Resistance ◽  
Salmonella Spp ◽  
Resistance Profile ◽  
The Public ◽  
Human Infections ◽  
Foodborne Infections

The purpose of this study was to analyse the profile of antimicrobial resistance among 21 strains of Salmonella isolated from patients with gastroenteritis symptom. It was observed that S. enteritidis was the serotype prevalent. These strains were sensitive to the majority of the antimicrobials tested, however, high resistance was observed in S. typhimurium and S. enterica subsp. enterica serotype 4,5,12:i:-. Surveillance and an efficient monitoring should be priority for the public health for the containment of antimicrobial resistance in foodborne infections.

scholarly journals Coagulase-negative staphylococcal bloodstream and prosthetic-device-associated infections: the role of biofilm formation and distribution of adhesin and toxin genes

2014 ◽  
Vol 63 (11) ◽  
pp. 1500-1508 ◽  
Author(s):  
Nikolaos Giormezis ◽  
Fevronia Kolonitsiou ◽  
Antigoni Foka ◽  
Eleanna Drougka ◽  
Apostolos Liakopoulos ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Antimicrobial Susceptibility ◽  
Multilocus Sequence Typing ◽  
Biofilm Formation ◽  
Bloodstream Infections ◽  
Multidrug Resistant ◽  
Prosthetic Device ◽  
Coagulase Negative Staphylococci ◽  
Toxin Genes ◽  
High Level

Coagulase-negative staphylococci (CNS), especially Staphylococcus epidermidis and Staphylococcus haemolyticus, have emerged as opportunistic pathogens in immunocompromised patients and those with indwelling medical devices. In this study, CNS recovered from patients with bloodstream infections (BSIs) or prosthetic-device-associated infections (PDAIs) were compared in terms of biofilm formation, antimicrobial resistance, clonal distribution, and carriage of adhesin and toxin genes. A total of 226 CNS isolates (168 S. epidermidis and 58 S. haemolyticus) recovered from hospital inpatients with BSIs (100 isolates) or PDAIs (126 isolates) were tested for biofilm formation, antimicrobial susceptibility, and mecA, ica operon, adhesin (aap, bap, fnbA, atlE, fbe) and toxin (tst, sea, sec) genes. The selected CNS were classified into pulsotypes by PFGE and assigned to sequence types by multilocus sequence typing. In total, 106/226 isolates (46.9 %) produced biofilm, whereas 150 (66.4 %) carried the ica operon. Most isolates carried mecA and were multidrug resistant (90.7 %). CNS recovered from BSIs were significantly more likely to produce biofilm (P = 0.003), be resistant to antimicrobials and carry mecA (P<0.001), as compared with isolates derived from PDAIs. CNS from PDAIs were more likely to carry the aap and bap genes (P = 0.006 and P = 0.045, respectively). No significant differences in the carriage of toxin genes were identified (P>0.05). Although PFGE revealed genetic diversity, especially among S. epidermidis, analysis of representative strains from the main PFGE types by multilocus sequence typing revealed three major clones (ST2, ST5 and ST16). A clonal relationship was found with respect to antimicrobial susceptibility and ica and aap gene carriage, reinforcing the premise of clonal expansion in hospital settings. The results of this study suggest that the pathogenesis of BSIs is associated with biofilm formation and high-level antimicrobial resistance, whereas PDAIs are related to the adhesion capabilities of S. epidermidis and S. haemolyticus strains.

scholarly journals Antimicrobial resistance surveillance in the South African private sector report for 2016

2018 ◽  
Vol 33 (4) ◽  
pp. 114-117
Author(s):  
Olga Perovic ◽  
Husna Ismail ◽  
Erika Van Schalkwyk ◽  
Warren Lowman ◽  
Elizabeth Prentice ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Private Sector ◽  
Antimicrobial Susceptibility ◽  
Susceptibility Testing ◽  
Action Plan ◽  
Treatment Resistance ◽  
Antimicrobial Susceptibility Testing ◽  
World Health ◽  
Global Action ◽  
High Level

Aim: The relevance of surveillance for antimicrobial resistance is increasingly recognised in the light of a global action plan to combat resistance. This report presents antimicrobial susceptibility testing on ESKAPE pathogens from private sector laboratories in South Africa for 2016.Methods: Antimicrobial susceptibility testing (AST) performed on ESKAPE organisms (Enterococcus faecium, Enterococcus faecalis, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter cloacae and Escherichia coli) isolated from blood cultures at four private pathology laboratories in 2016 were analysed. Analysis and reporting of data were done via a uniform platform created by the NICD for national AST data.Results: AST were reported on 9 029 ESKAPE organisms including 58% Enterobacteriaceae, 28% Gram-positive bacteria and 14% Gram-negative bacteria and drug-bug combination was performed following the Global Antimicrobial Surveillance System (GLASS) guidelines by the World Health Organization.Conclusions: The most important resistance to address is a high level of ESBL in Enterobacteriaceae, which necessitates the use of carbapenems for treatment. Resistance to carbapenems is recorded in this report but not confirmation of genes by genotypic methods. During this period, no increase in vancomycin-resistant Enterococci was observed.

scholarly journals Salmonella spp. prevalence, antimicrobial resistance and risk factor determination in Colombian swine farms

2019 ◽  
Vol 39 (10) ◽  
pp. 816-822
Author(s):  
Juan P. Giraldo-Cardona ◽  
Daniela Gualdrón-Ramírez ◽  
Iliana Chamorro-Tobar ◽  
Adriana Pulido-Villamarín ◽  
Natalia Santamaría-Durán ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Antimicrobial Resistance ◽  
Antimicrobial Susceptibility ◽  
Management Practices ◽  
Statistical Significance ◽  
Serological Response ◽  
Salmonella Spp ◽  
Swine Farms ◽  
Geographical Regions

ABSTRACT: To determine Salmonella spp. prevalence/seroprevalence, antimicrobial resistance patterns and risk factor identification associated with its presence in Colombian swine farms. 504 samples (Faeces, swabs and environment samples) were obtained from 21 farms distributed in four geographical regions in Colombia. Salmonella spp. microbiological and molecular detection were determined by two Salmonella spp. MDS3M™ and MALDI-TOF MS assays, respectively. In addition, for serological evaluation 231 serum samples were analyzed employing ELISA Salmonella Pigtype®-Salmonella Ab (QUIAGEN®). Additionally, 41 isolates were tested for antimicrobial susceptibility using broth microdilution technique (Panel B1016-180 Beckman Coulter NC72®) and verified with WHONET 2016 software. Risk factors were assessed from a survey and analyzed for statistical significance by U Mann-Whitney test. An 8.9% prevalence (n=45) and 38.1% (n=88) seroprevalence were determined. All isolates presented 100% antimicrobial susceptibility against amikacin. However, resistance against penicillin, tetracycline, cefuroxime and trimethoprim/sulfamethoxazole was present in more than 50% of evaluated strains. Risk factors associated with Salmonella spp. presence were surface water use, rough-surfaced on floors, presence of hoppers as feeders and worker’s boots. Bacteria were present in animals and environmental samples from evaluated farms. Animal contact and/or exposure with the microorganism were also evident in obtained serological response. Bacteria presence depended on management practices and infrastructure, likewise antibiotic use, supplemented in the diet may have induced an increase in Salmonella spp. antimicrobial resistance.

Prevalence and Multidrug Resistance Pattern of Salmonella Carrying Extended-Spectrum β-Lactamase in Frozen Chicken Meat in Bangladesh

2020 ◽  
Vol 83 (12) ◽  
pp. 2107-2121
Author(s):  
MST. SONIA PARVIN ◽  
MD. MEHEDI HASAN ◽  
MD. YAMIN ALI ◽  
EMDADUL HAQUE CHOWDHURY ◽  
MD. TANVIR RAHMAN ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Foodborne Pathogen ◽  
Multidrug Resistant ◽  
Chicken Meat ◽  
Resistance Pattern ◽  
Salmonella Spp ◽  
Policy Makers ◽  
Disk Diffusion Test ◽  
Extended Spectrum ◽  
Meat Samples

ABSTRACT Salmonella is an important foodborne pathogen that causes public health problems globally, and the increase of antimicrobial resistance in Salmonella has intensified the problem. Chicken meat is an important reservoir and disseminator of Salmonella to humans. This study aimed at estimating the burden of Salmonella carrying extended-spectrum β-lactamase (ESBL) and their antimicrobial resistance pattern in 113 domestic frozen chicken meat samples purchased from supershops available in five divisional megacities of Bangladesh. The study also focused on the determination of β-lactamase–, and plasmid-mediated quinolone resistance–encoding genes. All samples were analyzed for the presence of Salmonella using selective media and PCR assay. Antimicrobial susceptibility test was done by disk diffusion test, and ESBL screening was performed by double-disk synergy tests. Resistance genes were detected using multiplex PCR. Of samples, 65.5% were positive for Salmonella spp., and, of these, 58.1% isolates were ESBL producers. All the isolates were multidrug resistant (MDR): 40.5% were resistant to both three to five and six to eight antimicrobial classes; 17.6% were resistant to 9 to 11 classes, and 1.4% isolates to 12 to 15 classes. The highest rates of resistance were observed against oxytetracycline (100%), followed by trimethoprim-sulfamethoxazole (89.2%), tetracycline (86.5%), nalidixic acid (83.8%), amoxicillin (74.3%), and pefloxacin (70.3%). Notably, 48.6% of isolates demonstrated resistance to imipenem. One (1.4%) isolate was possibly extensively drug resistant. All the isolates were positive for the blaTEM gene, 2.7% were positive for blaCTX-M-1, and 20.3% for blaNDM-1. The prevalence of qnrA and qnrS genes was 4.1 and 6.8%, respectively. This study shows that ESBL-producing Salmonella are widespread in frozen chicken meat in Bangladesh, which puts greater responsibility on food processors and policy makers to ensure food safety. HIGHLIGHTS

scholarly journals Antimicrobial susceptibility and virulence-associated genes in Campylobacter isolates from milk and wastewater in Hatay, Turkey

2019 ◽  
Vol 49 (5) ◽  
Author(s):  
Mehmet Elmalı ◽  
Hayriye Yeşim Can
Keyword(s):  
Multidrug Resistance ◽  
Antimicrobial Resistance ◽  
Multiplex Pcr ◽  
Antimicrobial Susceptibility ◽  
Raw Milk ◽  
Foodborne Diseases ◽  
Common Causes ◽  
The World ◽  
Wastewater Samples ◽  
Raw Cow’S Milk

ABSTRACT: Campylobacter is one of the most common causes of bacterial foodborne diseases throughout the world. This study was conducted to determine the prevalence, antimicrobial resistance and virulence of Campylobacter isolates of raw cow’s milk and cattle slaughterhouse wastewater samples in Hatay, Turkey. A total of 114 raw milk and 78 wastewater samples were analyzed for the identification of C. jejuni, C. coli, and C. lari by multiplex PCR. The overall prevalence of Campylobacter was found to be 7.2%, of these isolates, 85.7% were identified as C. jejuni and 14.2% as C. coli, but C. lari was not detected in the study. The cdtA and cadF genes were present in 66.6% and 41.6% of C. jejuni isolates tested, respectively, but wlaN gene was not found in any of the isolates. Results of antimicrobial resistance analysis showed that 71.4% of the isolates were resistant to erythromycin, 64.2% to tetracycline, and 57.1% to ciprofloxacin. Overall, 8 of 14 Campylobacter isolates (57.1%) showed a multidrug resistance.

scholarly journals Antimicrobial Resistance Pattern of Enterobacter Species Isolated from Different Clinical Specimens in a Tertiary Care Hospital of Bangladesh

2019 ◽  
Vol 13 (2) ◽  
pp. 3-6
Author(s):  
Mashrura Quraishi ◽  
Ahmed Abu Saleh ◽  
Chandan Kumar Roy ◽  
Fatima Afroz ◽  
GM Mohiuddin
Keyword(s):  
Antimicrobial Resistance ◽  
High Resistance ◽  
Antimicrobial Susceptibility ◽  
Susceptibility Testing ◽  
Antimicrobial Susceptibility Testing ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Clinical Specimens ◽  
Enterobacter Species ◽  
Resistance Rates

The present study was undertaken to determine the antimicrobial resistance pattern of Enterobacter species to guide the clinician in selecting the best antimicrobial agent for an individual patient. A total of 50 clinical isolates of Enterobacter species were collected from different clinical specimens at the microbiology laboratory of BSMMU between August, 2018 and September, 2019. The two main species of Enterobacter, E.cloacae and E.aerogenes were identified by biochemical tests. Antimicrobial susceptibility testing was performed by Kirby Bauer disc diffusion method and reported according to CLSI guidelines. Majority (56%) of the isolated Enterobacter were E.cloacae, 40% were E.aerogenes and 4% were other species. The Enterobacter isolates showed relatively high resistance rates to the cephalosporins including cefoxitin (82%), cefixime (62%), ceftazidime (46%) and ceftriaxone (46%). Resistance to the carbapenems and aminoglycosides was relatively low. The high resistance rates of Enterobacter species to multiple antibiotics makes it necessary for antimicrobial susceptibility testing to be conducted prior to antibiotic prescription. Bangladesh J Med Microbiol 2019; 13 (2): 3-6

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