scholarly journals Lentic and effluent water of Delhi-NCR: a reservoir of multidrug-resistant bacteria harbouring blaCTX-M, blaTEM and blaSHV type ESBL genes

2021 ◽  
Author(s):  
Asghar Ali ◽  
Insha Sultan ◽  
Aftab Hossain Mondal ◽  
Mohammad Tahir Siddiqui ◽  
Firdoos Ahmad Gogry ◽  
...  
Keyword(s):  
Treatment Plant ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
Gene Variants ◽  
Bacterial Isolates ◽  
Effluent Water ◽  
M Gene ◽  
Aeromonas Caviae ◽  
Enterobacter Ludwigii ◽  
Mar Index

Abstract Antimicrobial resistance is not restricted to clinics but also spreading fast in the aquatic environment. This study focused on the prevalence and diversity of extended-spectrum β-lactamase (ESBL) genes among bacteria from lentic and effluent water in Delhi-NCR, India. Phenotypic screening of 436 morphologically distinct bacterial isolates collected from diverse sites revealed that 106 (∼24%) isolates were ESBL positive. Antibiotic profiling showed that 42, 60, 78 and 59% ESBL producing isolates collected from Ghazipur slaughterhouse, Lodhi garden pond, Hauz Khas lake and Jasola wastewater treatment plant, respectively, were multidrug-resistant (MDR). The multiple antibiotic resistance (MAR) index varied from 0.20 to 0.32 among selected locations. The prevalence of ESBL gene variants blaSHV, blaTEM and blaCTX-M were found to be 17.64, 35.29 and 64%, respectively. Furthermore, the analysis of obtained gene sequences showed three variants of blaCTX-M (15, 152 and 205) and two variants of blaTEM (TEM-1 and TEM-116) among ESBLs producers. The co-existence of 2–3 gene variants was recorded among 48% ESBL positive isolates. New reports from this study include the blaCTX-M gene in Acinetobacter lwoffii, Enterobacter ludwigii, Exiguobacterium mexicanum and Aeromonas caviae. Furthermore, the identification of blaTEM and blaSHV in an environmental isolate of A. caviae is a new report from India.

scholarly journals Antibiotic-Resistant Bacteria in Clams—A Study on Mussels in the River Rhine

Antibiotics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 571
Author(s):  
Nicole Zacharias ◽  
Iris Löckener ◽  
Sarah M. Essert ◽  
Esther Sib ◽  
Gabriele Bierbaum ◽  
...  
Keyword(s):  
Bacterial Infections ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
River Rhine ◽  
Antibiotic Resistant Bacteria ◽  
Surrounding Water ◽  
Antibiotic Resistant

Bacterial infections have been treated effectively by antibiotics since the discovery of penicillin in 1928. A worldwide increase in the use of antibiotics led to the emergence of antibiotic resistant strains in almost all bacterial pathogens, which complicates the treatment of infectious diseases. Antibiotic-resistant bacteria play an important role in increasing the risk associated with the usage of surface waters (e.g., irrigation, recreation) and the spread of the resistance genes. Many studies show that important pathogenic antibiotic-resistant bacteria can enter the environment by the discharge of sewage treatment plants and combined sewage overflow events. Mussels have successfully been used as bio-indicators of heavy metals, chemicals and parasites; they may also be efficient bio-indicators for viruses and bacteria. In this study an influence of the discharge of a sewage treatment plant could be shown in regard to the presence of E. coli in higher concentrations in the mussels downstream the treatment plant. Antibiotic-resistant bacteria, resistant against one or two classes of antibiotics and relevance for human health could be detected in the mussels at different sampling sites of the river Rhine. No multidrug-resistant bacteria could be isolated from the mussels, although they were found in samples of the surrounding water body.

scholarly journals Prevalence of Antibiotic-Resistant Bacteria ESKAPE among Healthy People Estimated by Monitoring of Municipal Wastewater

Antibiotics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 495
Author(s):  
Masateru Nishiyama ◽  
Susan Praise ◽  
Keiichi Tsurumaki ◽  
Hiroaki Baba ◽  
Hajime Kanamori ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
General Population ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
Municipal Wastewater Treatment ◽  
Antibiotic Resistant ◽  
Carbapenem Resistant ◽  
Wastewater Samples

There is increasing attention toward factors that potentially contribute to antibiotic resistance (AR), as well as an interest in exploring the emergence and occurrence of antibiotic resistance bacteria (ARB). We monitored six ARBs that cause hospital outbreaks in wastewater influent to highlight the presence of these ARBs in the general population. We analyzed wastewater samples from a municipal wastewater treatment plant (MWWTP) and hospital wastewater (HW) for six species of ARB: Carbapenem-resistant Enterobacteria (CARBA), extended-spectrum β-lactamase producing Enterobacteria (ESBL), multidrug-resistant Acinetobacter (MDRA), multidrug-resistant Pseudomonas aeruginosa (MDRP), methicillin-resistant Staphylococcus aureus (MRSA), and vancomycin-resistant Enterococci (VRE). We registered a high percentage of ARBs in MWWTP samples (>66%) for all ARBs except for MDRP, indicating a high prevalence in the population. Percentages in HW samples were low (<78%), and no VRE was detected throughout the study. CARBA and ESBL were detected in all wastewater samples, whereas MDRA and MRSA had a high abundance. This result demonstrated the functionality of using raw wastewater at MWWTP to monitor the presence and extent of ARB in healthy populations. This kind of surveillance will contribute to strengthening the efforts toward reducing ARBs through the detection of ARBs to which the general population is exposed.

scholarly journals Prevalence of Mastitis and Antibiotic Resistance of Bacterial Isolates from CMT Positive Milk Samples Obtained from Dairy Cows, Camels, and Goats in Two Pastoral Districts in Southern Ethiopia

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1530
Author(s):  
Amanuel Balemi ◽  
Balako Gumi ◽  
Kebede Amenu ◽  
Sisay Girma ◽  
Muuz Gebru ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Dairy Cows ◽  
Raw Milk ◽  
Multidrug Resistant ◽  
Southern Ethiopia ◽  
Resistant Bacteria ◽  
Coagulase Negative Staphylococcus ◽  
Bacterial Isolates ◽  
E Coli ◽  
Milk Samples

A study was carried out from August 2017 to February 2018 on lactating dairy cows, one-humped dromedary camels, and goats to determine mastitis in the Bule Hora and Dugda Dawa districts of in Southern Ethiopia. Milk samples from 564 udder quarters and udder halves from 171 animals consisting of 60 dairy cows, 51 camels, and 60 goats were tested for mastitis. Sixty-four positive udder milk samples were cultured, and bacterial mastitis pathogens were isolated and identified. The antibiotic resistance of bacterial isolates from milk with mastitis was tested against nine antimicrobials commonly used in the study area. Cow- and quarter-level prevalence of mastitis in dairy cows, camels, and goats was 33.3%, 26.3%, and 25% and 17.6%, 14.5%, and 20%, respectively. In cattle, the prevalence was significantly higher in Dugda Dawa than in Bule Hora. Major bacterial isolates were coagulase-negative Staphylococcus species (39.1%), S. aureus (17.2%), S. hyicus (14.1%), and S. intermedius and Escherichia coli (9.4% each). In camels, udder abnormality and mastitis were significantly higher in late lactation than in early lactation. Mastitis tends to increase with parity in camels. E. coli isolates were highly resistant to spectinomycin, vancomycin, and doxycycline, whereas most S. aureus isolates were multidrug-resistant. Most of the rural and periurban communities in this area consume raw milk, which indicates a high risk of infection with multidrug-resistant bacteria. We recommend a community-focused training program to improve community awareness of the need to boil milk and the risk of raw milk consumption.

scholarly journals Accumulation and expression of multiple antibiotic resistance genes in Arcobacter cryaerophilus that thrives in sewage

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3269 ◽  
Author(s):  
Jess A. Millar ◽  
Rahul Raghavan
Keyword(s):  
Antibiotic Resistance ◽  
Wastewater Treatment ◽  
Resistance Genes ◽  
Treatment Plant ◽  
Antibiotic Resistance Genes ◽  
Environmental Water ◽  
Multidrug Resistant ◽  
Municipal Sewage ◽  
Animal Origin ◽  
Resistant Bacteria

We explored the bacterial diversity of untreated sewage influent samples of a wastewater treatment plant in Tucson, AZ and discovered that Arcobacter cryaerophilus, an emerging human pathogen of animal origin, was the most dominant bacterium. The other highly prevalent bacteria were members of the phyla Bacteroidetes and Firmicutes, which are major constituents of human gut microbiome, indicating that bacteria of human and animal origin intermingle in sewage. By assembling a near-complete genome of A. cryaerophilus, we show that the bacterium has accumulated a large number of antibiotic resistance genes (ARGs) probably enabling it to thrive in the wastewater. We also determined that a majority of ARGs was being expressed in sewage, suggestive of trace levels of antibiotics or other stresses that could act as a selective force that amplifies multidrug resistant bacteria in municipal sewage. Because all bacteria are not eliminated even after several rounds of wastewater treatment, ARGs in sewage could affect public health due to their potential to contaminate environmental water.

scholarly journals Multidrug Resistant and Extensively Drug Resistant Bacteria: A Study

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Silpi Basak ◽  
Priyanka Singh ◽  
Monali Rajurkar
Keyword(s):  
Antimicrobial Resistance ◽  
Antibiotic Susceptibility ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
Close Monitoring ◽  
Care Hospital ◽  
Drug Resistant ◽  
Bacterial Isolates ◽  
Bacterial Strains ◽  
Extensively Drug Resistant

Background and Objective. Antimicrobial resistance is now a major challenge to clinicians for treating patients. Hence, this short term study was undertaken to detect the incidence of multidrug-resistant (MDR), extensively drug-resistant (XDR), and pandrug-resistant (PDR) bacterial isolates in a tertiary care hospital.Material and Methods. The clinical samples were cultured and bacterial strains were identified in the department of microbiology. The antibiotic susceptibility profile of different bacterial isolates was studied to detect MDR, XDR, and PDR bacteria.Results. The antibiotic susceptibility profile of 1060 bacterial strains was studied. 393 (37.1%) bacterial strains were MDR, 146 (13.8%) strains were XDR, and no PDR was isolated. All (100%) Gram negative bacterial strains were sensitive to colistin whereas all (100%) Gram positive bacterial strains were sensitive to vancomycin.Conclusion. Close monitoring of MDR, XDR, or even PDR must be done by all clinical microbiology laboratories to implement effective measures to reduce the menace of antimicrobial resistance.

scholarly journals Multidrug-Resistant Bacteria Associated with Cell Phones of Healthcare Professionals in Selected Hospitals in Saudi Arabia

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Saeed Banawas ◽  
Ahmed Abdel-Hadi ◽  
Mohammed Alaidarous ◽  
Bader Alshehri ◽  
Abdul Aziz Bin Dukhyil ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Cell Phone ◽  
Healthcare Workers ◽  
Cell Phones ◽  
Acute Otitis Media ◽  
Pseudomonas Stutzeri ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
Bacterial Isolates ◽  
Coagulase Negative Staphylococci

Cell phones may be an ideal habitat for colonization by bacterial pathogens, especially in hot climates, and may be a reservoir or vehicle in transmitting nosocomial infections. We investigated bacterial contamination on cell phones of healthcare workers in three hospitals in Saudi Arabia and determined antibacterial resistance of selected bacteria. A questionnaire was submitted to 285 healthcare workers in three hospitals, and information was collected on cell phone usage at the work area and in the toilet, cell phone cleaning and sharing, and awareness of cell phones being a source of infection. Screening on the Vitek 2 Compact system (bioMérieux Inc., USA) was done to characterize bacterial isolates. Of the 60 samples collected from three hospitals, 38 (63.3%) were positive with 38 bacterial isolates (4 Gram-negative and 34 Gram-positive bacteria). We found 38.3% of cell phones were contaminated with coagulase-negative staphylococci, particularly Staphylococcus epidermidis (10 isolates). Other bacterial agents identified were S. aureus, S. hominis, Alloiococcus otitis, Vibrio fluvialis, and Pseudomonas stutzeri. Antimicrobial susceptibility testing showed that most coagulase-negative staphylococci were resistant to benzylpenicillin, erythromycin, and rifampicin. Eight isolates were resistant to oxacillin, specifically S. epidermidis (3), S. hominis (2), and S. warneri (2). A. otitis, a cause of acute otitis media showed multidrug resistance. One isolate, a confirmed hetero-vancomycin intermediate-resistant S. aureus, was resistant to antibiotics, commonly used to treat skin infection. There was a significant correlation between the level of contamination and usage of cell phone at toilet and sharing. Our findings emphasize the importance of hygiene practices in cell phone usage among healthcare workers in preventing the transmission of multidrug-resistant microbes.

scholarly journals Real-Time PCR for Detection of NDM-1 Carbapenemase Genes from Spiked Stool Samples

2011 ◽  
Vol 55 (9) ◽  
pp. 4038-4043 ◽  
Author(s):  
Thierry Naas ◽  
Ayla Ergani ◽  
Amélie Carrër ◽  
Patrice Nordmann
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Multidrug Resistant ◽  
Qpcr Assay ◽  
Resistant Bacteria ◽  
Amplification Efficiency ◽  
Bacterial Isolates ◽  
Limits Of Detection ◽  
Stool Samples ◽  
Automated Dna Extraction

ABSTRACTAn in-house quantitative real-time PCR (qPCR) assay using TaqMan chemistry has been developed to detect NDM-1 carbapenemase genes from bacterial isolates and directly from stool samples. The qPCR amplification ofblaNDM-1DNA was linear over 10 log dilutions (r2= 0.99), and the amplification efficiency was 1.03. The qPCR detection limit was reproducibly 1 CFU, or 10 plasmid molecules, and there was no cross-reaction with DNA extracted from several multidrug-resistant bacteria harboring other β-lactam resistance genes. Feces spiked with decreasing amounts of enterobacterial isolates producing NDM-1 were spread on ChromID ESBL and on CHROMagar KPC media and were subjected to the qPCR. The limits of carbapenem-resistant bacterial detection from stools was reproducibly 1 × 101to 3 × 101CFU/100 mg feces with ChromID ESBL medium. The CHROMagar KPC culture medium had higher limits of detection (1 × 101to 4 × 103CFU/ml), especially with bacterial isolates having low carbapenem MICs. The limits of detection with the qPCR assay were reproducibly below 1 × 101CFU/100 mg of feces by qPCR assay. Samples spiked with NDM-1-negative bacteria were negative by qPCR. The sensitivity and specificity of theblaNDM-1qPCR assay on spiked samples were 100% in both cases. Using an automated DNA extraction system (QIAcube system), the qPCR assay was reproducible. The use of qPCR is likely to shorten the time forblaNDM-1detection from 48 h to 4 h and will be a valuable tool for outbreak follow-up in order to rapidly isolate colonized patients and assign them to cohorts.

scholarly journals Occurrence and antimicrobial resistance of bacteria in retail market spices

2020 ◽  
Vol 50 (4) ◽  
Author(s):  
Milena da Cruz Costa ◽  
Alexsandra Iarlen Cabral Cruz ◽  
Aline Simões da Rocha Bispo ◽  
Mariza Alves Ferreira ◽  
João Albany Costa ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Microbiological Quality ◽  
Multidrug Resistant ◽  
Black Pepper ◽  
Resistant Bacteria ◽  
Salmonella Spp ◽  
Food Markets ◽  
E Coli ◽  
Bacillus Spp ◽  
Mar Index

ABSTRACT: This study aimed to evaluate the microbiological quality and the transmission of multidrug-resistant bacteria in different spices sold in town fairs (local food markets) in the municipalities of Recôncavo Baiano. Samples of black pepper, oregano, and cinnamon were collected over a period of six months and investigated for coliforms at 45 °C, Staphylococcus spp., Staphylococcus aureus, Bacillus spp., Bacillus cereus, Escherichia coli and Salmonella spp. The contamination in the black pepper samples (log 4.66 CFU g-1) was higher (P>0.05), than those of cinnamon (log 2.55 CFU g-1) and oregano (log 2.49 CFU g-1), particularly for B. cereus. E. coli (89%) and Salmonella spp. (67%) were isolated only from black pepper. B. cereus and S. aureus showed greater resistance to β-lactams (penicillin, oxacillin, and cefepime), with approximately 40% of the strains with a multiple antimicrobial resistance (MAR) index of 0.33 (i.e., resistant to three antimicrobials). E. coli was more resistant to ampicillin and Salmonella spp. to nalidixic acid, ampicillin, and ceftriaxone. Salmonella spp. had a MAR index ranging from 0.16 to 0.91 (i.e, resistant to up to 11 antimicrobials), and E. coli to up to 0.58 (i.e., resistant to 7 antimicrobials). In conclusion, the spices sold in the town fairs of Recôncavo Baiano are of low microbiological quality, with the presence of pathogens, of which some display high resistance to antimicrobials that are commonly used for treating foodborne illnesses.

scholarly journals Assessment of the Bacteriological Profile and Antibiotic Susceptibility Patterns of Wastewater in Health Facilities of Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Belayneh Regasa Dadi ◽  
Eyayu Girma ◽  
Mheret Tesfaye ◽  
Mohamed Seid
Keyword(s):  
Health Facility ◽  
Antibiotic Susceptibility ◽  
Multidrug Resistant ◽  
Health Facilities ◽  
Resistant Bacteria ◽  
Coagulase Negative Staphylococcus ◽  
Bacterial Isolates ◽  
Bacteriological Profile ◽  
Antibiotic Susceptibility Patterns ◽  
Susceptibility Patterns

Background. Antimicrobials used for the treatment and prevention of bacterial infections are mainly released nonmetabolized into the aquatic environment via wastewater. Sometimes, unused therapeutic drugs are released down the drains that could act as selective pressure for the development of resistance. The aim of this study was to assess the bacteriological profile of wastewater in health facilities and determine antibiotic susceptibility patterns of bacterial isolates. Methods. A cross-sectional study was conducted from October 1 to December 26, 2020, in health facility wastewater. A total of 128 samples were collected from health facilities for bacteriological analysis and antimicrobial susceptibility testing. Result. A total of 128 samples were processed, and 81 bacterial isolates were recovered. The most common bacterial isolates were S. aureus (16/81 (19.8%)) followed by Klebsiella spp. (15/81 (18.5%)), E. coli (13/81 (16%)), P. aeruginosa (10/81 (12.3%)), Enterobacter spp. (8/81 (9.9%)), Citrobacter spp. (7/81 (8.6%)), coagulase-negative Staphylococcus (5/81 (6.2%)), Salmonella spp. (5/81 (6.2%)), and Shigella spp. (2/81 (2.5%)). A majority of isolates were resistant to ampicillin (62/81 (76.5%)). Only few isolates were resistant to ciprofloxacin (11/81 (13.6%)), chloramphenicol (13/81 (16%)), and kanamycin (8/54 (14.8%)). A majority of bacterial isolates (57/81 (70.4%)) were multidrug resistant (MDR). Conclusion. Wastewater from the health facilities contains antibiotic-resistant including multidrug-resistant bacteria. Therefore, health facility wastewater should be treated by appropriate wastewater treatment before being released into the environment.

scholarly journals Multidrug-Resistant Bacteria with ESBL Genes: A Growing Threat Among HIV Patients in Nepal

2021 ◽  
Author(s):  
Riju Maharjan ◽  
Anup Bastola ◽  
Nabaraj Adhikari ◽  
Komal Raj Rijal ◽  
Megha Raj Banjara ◽  
...  
Keyword(s):  
Multidrug Resistant ◽  
Morbidity And Mortality ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Bacterial Isolates ◽  
Multidrug Resistant Bacteria ◽  
Hiv Patients ◽  
Microbiological Methods ◽  
Tract Infections ◽  
Esbl Producers

Abstract Background Bacterial opportunistic infections are quite common in HIV patients. Besides HIV-TB coinfection, lower respiratory tract infections by multidrug-resistant bacteria cause significant morbidity and mortality among HIV patients. This study was done to evaluate the bacterial coinfection of LRT and detect plasmid-mediated blaTEM and blaCTX−M genes among Extended-Spectrum β-Lactamase (ESBL) producing isolates from sputum samples in HIV patients. Methods A total of 263 sputum samples from HIV-positive cases were processed with standard microbiological methods to isolate and identify the possible pathogens. The identified bacterial isolates were assessed for antibiotic susceptibility pattern by using modified Kirby Bauer disk diffusion method following Clinical Laboratory Standard Institute (CLSI) guidelines. Plasmid DNA was extracted from multidrug-resistant and ESBL producers for screening of ESBL genes; blaCTX−M and blaTEM by conventional PCR method using specific primers. Results Of 263 sputum samples, 67 (25.48%) were culture positive showing Klebsiella pneumoniae; 17(25.37%) as the most predominant one. A higher rate of infection (4/8, 50%) was observed among old-aged people of 61 -70 years, whereas no infection was observed below 20 years. About 30.0% (15/50) of smokers, 32.86% (23/70) cases with previous pulmonary tuberculosis and 52.38% (11/21) with CD4 count <200 cells/µl were found to be susceptible to LRTIs. Among 53 bacterial isolates, 52.83% (n=28) were multidrug-resistant and 43.4% (n=23) were ESBL producers. All ESBL producers were sensitive to Colistin and Polymyxin B. Of 23 ESBL producers, 47.83% (11/23) and 8.6% (2/23) possessed only blaCTX−M and blaTEM genes respectively and 43.48% (10/23) possessed both ESBL genes. Conclusion The increasing rate of MDR bacterial infections mainly ESBL producers of LRTIs causes difficulty in the management of diseases leading to high morbidity and mortality of HIV patients.

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