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1.
J Antimicrob Chemother ; 79(7): 1614-1618, 2024 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-38804143

RESUMO

BACKGROUND: Carbapenem-resistant Pseudomonas aeruginosa are being increasingly described worldwide. Here, we investigated the molecular mechanisms underlying carbapenem resistance in an extremely drug-resistant P. aeruginosa isolate from a neonatal intensive care unit in Morocco. MATERIALS AND METHODS: P. aeruginosa strain O82J1 was identified using MALDI-TOF-MS. Carba NP, immunochromatographic assay NG Carba5 and antimicrobial susceptibility testing using disc diffusion and microbroth were performed. Whole-genome sequencing using the Illumina and MinION technologies and different software packages available at the Center of Genomic Epidemiology were used to predict the resistome, sequence type and plasmid types. RESULTS: P. aeruginosa O82J1 co-expressed two metallo-ß-lactamases, blaNDM-1 and blaVIM-2, and was susceptible to colistin and apramycin only. It belonged to ST773 that is frequently reported worldwide as a high-risk P. aeruginosa clone. The blaVIM-2 gene was integron-borne on a IncP-2 465-kb plasmid, whereas the blaNDM-1 gene was chromosomally encoded and embedded in an integrative conjugative element, probably at the origin of its acquisition. A total of 23 antimicrobial resistance genes were detected including a blaPER-1 ESBL gene, and an 16S-rRNA methyltransferase gene rmtB. CONCLUSIONS: The isolation of XDR P. aeruginosa isolates expressing several carbapenemases in a neonatal intensive care unit is of great concern due to the reduced treatment options, relying only on colistin, but not recommended in neonates, and apramycin, not yet approved for human therapy. Concerns were further elevated due to the resistance to cefiderocol and ATM/AVI, two novel and last-resort antibiotics recommended to treat infections caused by Gram-negative bacteria, particularly XDR P. aeruginosa in adults.


Assuntos
Antibacterianos , Testes de Sensibilidade Microbiana , Sepse Neonatal , Infecções por Pseudomonas , Pseudomonas aeruginosa , beta-Lactamases , beta-Lactamases/genética , Pseudomonas aeruginosa/genética , Pseudomonas aeruginosa/efeitos dos fármacos , Pseudomonas aeruginosa/enzimologia , Pseudomonas aeruginosa/isolamento & purificação , Humanos , Recém-Nascido , Marrocos/epidemiologia , Infecções por Pseudomonas/microbiologia , Infecções por Pseudomonas/epidemiologia , Antibacterianos/farmacologia , Sepse Neonatal/microbiologia , Plasmídeos/genética , Sequenciamento Completo do Genoma , Unidades de Terapia Intensiva Neonatal , Farmacorresistência Bacteriana Múltipla/genética , Carbapenêmicos/farmacologia
2.
Food Microbiol ; 107: 104084, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35953178

RESUMO

The potential transmission of SARS-CoV-2 via food has been controversial since the beginning of the COVID-19 pandemic. To investigate these concerns, reliable detection methods and data on virus die-off rates in various foods are needed. Here, an FDA-standard method for the detection of enteric viruses' RNA from soft fruits was modified for the recovery of infectious SARS-CoV-2. Then, the survival of SARS-CoV-2 on berries was investigated as well as the effectiveness of washing virus-contaminated berries with water. The modified method did not significantly reduced log infectivity titers of recovered viruses, but berries did. The detection limit of the method for infectious SARS-CoV-2 was ∼2.97 log TCID50/g of berries. On SARS-CoV-2-inoculated berries that were stored at 4 °C for 7 days, significant reductions in SARS-CoV-2 infectivity were observed over time. In contrast, on frozen berries, infectious SARS-CoV-2 was recovered for 28 days without significant reductions. Washing SARS-CoV-2-inoculated berries with water removed >90% of infectious viruses within 10 min; however, infectious viruses were detected in wash water. Therefore, on fresh berries infectious viruses are markedly inactivated over time and can be largely removed by washing with water. However, the prolonged survival of SARS-CoV-2 on frozen berries suggests that the virus can potentially spread through frozen fruits.


Assuntos
COVID-19 , Vírus , Frutas , Humanos , Pandemias , SARS-CoV-2/genética , Água
3.
Int J Mol Sci ; 23(21)2022 Nov 03.
Artigo em Inglês | MEDLINE | ID: mdl-36362240

RESUMO

Genome sequencing facilitates the study of bacterial taxonomy and allows the re-evaluation of the taxonomic relationships between species. Here, we aimed to analyze the draft genomes of four commensal Neisseria clinical isolates from the semen of infertile Lebanese men. To determine the phylogenetic relationships among these strains and other Neisseria spp. and to confirm their identity at the genomic level, we compared the genomes of these four isolates with the complete genome sequences of Neisseria gonorrhoeae and Neisseria meningitidis and the draft genomes of Neisseria flavescens, Neisseria perflava, Neisseria mucosa, and Neisseria macacae that are available in the NCBI Genbank database. Our findings revealed that the WGS analysis accurately identified and corroborated the matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) species identities of the Neisseria isolates. The combination of three well-established genome-based taxonomic tools (in silico DNA-DNA Hybridization, Ortho Average Nucleotide identity, and pangenomic studies) proved to be relatively the best identification approach. Notably, we also discovered that some Neisseria strains that are deposited in databases contain many taxonomical errors. The latter is very important and must be addressed to prevent misdiagnosis and missing emerging etiologies. We also highlight the need for robust cut-offs to delineate the species using genomic tools.


Assuntos
Neisseria meningitidis , Neisseria , Masculino , Humanos , Filogenia , Neisseria/genética , Neisseria gonorrhoeae/genética , Neisseria meningitidis/genética , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz , DNA , Genoma Bacteriano
4.
Artigo em Inglês | MEDLINE | ID: mdl-33593846

RESUMO

Colistin is one of the few first-line options for treating complicated infections with certain multidrug-resistant bacteria (1).….

6.
Foodborne Pathog Dis ; 14(1): 29-34, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27768387

RESUMO

Poultry is a major source of Campylobacter, which can cause foodborne bacterial gastroenteritis in humans. Additionally, poultry-associated Campylobacter can develop resistance to important antimicrobials, which increases the risk to public health. While broiler chickens have been the focus of many studies, the emergence of antimicrobial-resistant Campylobacter on layer farms has not received equal attention. However, the growing popularity of cage-free and organic layer farming necessitates a closer assessment of (1) the impact of these farming practices on the emergence of antimicrobial-resistant Campylobacter and (2) layers as a potential source for the transmission of these pathogens. Here, we showed that the prevalence of Campylobacter on organic and conventional layer farms was statistically similar (p > 0.05). However, the average number of Campylobacter jejuni-positive organically grown hens was lower (p < 0.05) in comparison to conventionally grown hens. Campylobacter isolated from both production systems carried antimicrobial resistance genes. The tet(O) and cmeB were the most frequently detected genes, while the occurrence of aph-3-1 and blaOXA-61 was significantly lower (p < 0.05). Farming practices appeared to have an effect on the antimicrobial resistance phenotype, because the isolates from organically grown hens on two farms (OF-2 and OF-3) exhibited significantly lower resistance (p < 0.05) to ciprofloxacin, erythromycin, and tylosin. However, on one of the sampled organic farms (OF-1), a relatively high number of antimicrobial-resistant Campylobacter were isolated. We conclude that organic farming can potentially impact the emergence of antimicrobial-resistant Campylobacter. Nevertheless, this impact should be regularly monitored to avoid potential relapses.


Assuntos
Campylobacter/isolamento & purificação , Galinhas/microbiologia , Farmacorresistência Bacteriana Múltipla , Animais , Antibacterianos/farmacologia , Campylobacter/efeitos dos fármacos , Campylobacter/genética , Ciprofloxacina/farmacologia , Eritromicina/farmacologia , Fezes/microbiologia , Contaminação de Alimentos , Microbiologia de Alimentos , Genes Bacterianos , Testes de Sensibilidade Microbiana , Aves Domésticas , Perus/microbiologia
7.
Foodborne Pathog Dis ; 14(8): 472-477, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28622473

RESUMO

We investigated the contribution of litter to the occurrence of Campylobacter on three broiler farms, which were known to have low (LO) and high (HI-A and HI-B) Campylobacter prevalence. For this purpose, we collected litter samples (n = 288) during and after two rearing cycles from each farm. We evaluated the occurrence of Campylobacter (using selective enrichment and quantitative real-time polymerase chain reaction [q-PCR] analysis) in the litter samples as well as the litter's pH and moisture content. Ceca from each flock (n = 144) were harvested at slaughter age and used to quantify Campylobacter colony-forming units (CFUs). Campylobacter was only retrieved from 7 litter samples that were collected from HI-A and HI-B during the growing period, but no Campylobacter was isolated from LO farms. The q-PCR analysis detected Campylobacter in pooled litter samples from all three farms. However, in litter collected during the same rotation, Campylobacter levels were significantly higher (p < 0.05) in HI-A and HI-B litter samples in comparison to those in LO. Cecal samples from HI-A and HI-B yielded relatively high numbers of Campylobacter CFUs, which were undetectable in LO samples. Litter's pH and moisture did not affect the overall occurrence of Campylobacter in litter and ceca on any of the farms. Our data suggest that Campylobacter was generally more abundant in litter that was collected from farms with highly colonized flocks. Therefore, better approaches for assessing the occurrence of Campylobacter in litter might be warranted in order to reduce the dissemination of these pathogens on and off poultry farms.


Assuntos
Infecções por Campylobacter/microbiologia , Campylobacter/isolamento & purificação , Galinhas/microbiologia , Doenças Transmitidas por Alimentos/microbiologia , Doenças das Aves Domésticas/microbiologia , Animais , Campylobacter/genética , Infecções por Campylobacter/epidemiologia , Inocuidade dos Alimentos , Doenças Transmitidas por Alimentos/epidemiologia , Humanos , Concentração de Íons de Hidrogênio , Aves Domésticas , Doenças das Aves Domésticas/epidemiologia , Prevalência
8.
Avian Dis ; 59(2): 185-200, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26473668

RESUMO

Avian hosts constitute a natural reservoir for thermophilic Campylobacter species, primarily Campylobacter jejuni and Campylobacter coli, and poultry flocks are frequently colonized in the intestinal tract with high numbers of the organisms. Prevalence rates in poultry, especially in slaughter-age broiler flocks, could reach as high as 100% on some farms. Despite the extensive colonization, Campylobacter is essentially a commensal in birds, although limited evidence has implicated the organism as a poultry pathogen. Although Campylobacter is insignificant for poultry health, it is a leading cause of food-borne gastroenteritis in humans worldwide, and contaminated poultry meat is recognized as the main source for human exposure. Therefore, considerable research efforts have been devoted to the development of interventions to diminish Campylobacter contamination in poultry, with the intention to reduce the burden of food-borne illnesses. During the past decade, significant advance has been made in understanding Campylobacter in poultry. This review summarizes the current knowledge with an emphasis on ecology, antibiotic resistance, and potential pre- and postharvest interventions.


Assuntos
Antibacterianos/farmacologia , Infecções por Campylobacter/veterinária , Campylobacter/efeitos dos fármacos , Doenças das Aves Domésticas/microbiologia , Aves Domésticas , Animais , Infecções por Campylobacter/microbiologia , Farmacorresistência Bacteriana
9.
BMC Vet Res ; 10: 274, 2014 Nov 25.
Artigo em Inglês | MEDLINE | ID: mdl-25420712

RESUMO

BACKGROUND: Campylobacter jejuni is commonly found in the gastrointestinal tract of many food-animals including sheep without causing visible clinical symptoms of disease. However, C. jejuni has been implicated in ovine abortion cases worldwide. Specifically, in the USA, the C. jejuni sheep abortion (SA) clone has been increasingly associated with sheep abortion. In vivo studies in sheep (the natural host) are needed to better characterize the virulence potential and pathogenesis of this clone. RESULTS: Pregnant ewes intravenously (IV) or orally inoculated with ovine or bovine abortion-associated C. jejuni SA clones exhibited partial or complete uterine prolapse with retained placenta, and abortion or stillbirth, whereas delivery of healthy lambs occurred in pregnant ewes inoculated with C. jejuni 81-176 or in the uninfected group. In sheep inoculated with the SA clone, histopathological lesions including suppurative necrotizing placentitis and/or endometritis coincided with: 1) increased apoptotic death of trophoblasts, 2) increased expression of the host genes (e.g. genes encoding interleukin IL-6 and IL-15) related to cellular necrosis and pro-inflammatory responses in uterus, and 3) decreased expression of the genes encoding GATA binding protein 6, chordin, and insulin-like 3 (INSL3) that account for embryonic development in uterus. Immunohistochemistry revealed localization of bacterial antigens in trophoblasts lining the chorioallantoic membrane of ewes inoculated with the C. jejuni SA clone. CONCLUSIONS: The results showed that C. jejuni SA clones are capable of causing abortion or stillbirth in experimentally infected sheep. Furthermore, down- or up-regulation of specific genes in the uterus of infected pregnant ewes might implicate host genes in facilitating the disease progression. Since the C. jejuni SA strains share genotypic similarities with clones that have been isolated from human clinical cases of gastroenteritis, these strains might represent a potential public health risk.


Assuntos
Aborto Séptico/veterinária , Aborto Animal/etiologia , Infecções por Campylobacter/veterinária , Campylobacter jejuni , Doenças dos Ovinos/microbiologia , Aborto Séptico/etiologia , Aborto Séptico/microbiologia , Aborto Séptico/patologia , Aborto Animal/microbiologia , Aborto Animal/patologia , Animais , Infecções por Campylobacter/complicações , Infecções por Campylobacter/microbiologia , Infecções por Campylobacter/patologia , Endometrite/microbiologia , Endometrite/patologia , Endometrite/veterinária , Feminino , Análise de Sequência com Séries de Oligonucleotídeos/veterinária , Placenta/patologia , Gravidez , Ovinos/microbiologia , Doenças dos Ovinos/patologia , Transcriptoma
10.
Foodborne Pathog Dis ; 11(12): 917-9, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25268895

RESUMO

The oxidation of formate constitutes a main energy source for Campylobacter jejuni, an important foodborne pathogen. Formate occurs in the hosts' gut as a byproduct of fermentation, which may contribute to C. jejuni's adaptation to that niche. C. jejuni possesses a periplasmic formate dehydrogenase (Fdh) that facilitates the metabolism of formate. In C. jejuni NCTC-11168, a poorly invasive strain, Fdh localizes to the periplasm via the twin arginine translocation (Tat) system, and the fdhA encodes the signature Tat signal motif. However, screening the genome of C. jejuni 81-176, a highly invasive strain, showed that the Tat signal motif was encoded on a separate gene (CJJ81176_1504) directly upstream of the fdhA (CJJ81176_1503). This possibly suggested a difference in formate metabolism between these two strains. Therefore, we investigated whether the Fdh was Tat dependent in C. jejuni 81-176. For this purpose, we measured formate respiration in C. jejuni 81-176 (wild-type), a Tat mutant (ΔtatC-81-176), and a complementation strain (C-ΔtatC-81-176) using BIOLOG-AN plates. We also used a viologen-based assay to specifically measure the Fdh enzymatic activity in whole cells and periplasmic preparations of the wild-type and mutant strains. Collectively, our data indicated that the Fdh activity and localization in C. jejuni 81-176 were dependent on a functional Tat system. The proper maturation and maintenance of Fdh are essential for cognate energy production, which might explain the association of the Fdh with the Tat system across different strains. The latter highlights the potential of the Tat system and Fdh as appealing targets for novel anti-C. jejuni therapeutics.


Assuntos
Proteínas de Bactérias/metabolismo , Campylobacter jejuni/enzimologia , Formiato Desidrogenases/metabolismo , Formiatos/metabolismo , Proteínas de Membrana Transportadoras/metabolismo , Periplasma/enzimologia
11.
Future Microbiol ; 19(15): 1333-1353, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39229784

RESUMO

Recent cholera outbreaks in many countries in the Middle East and North Africa (MENA) region have raised public health concerns and focused attention on the genus Vibrio. However, the epidemiology of Vibrio species in humans, water, and seafood is often anecdotal in this region. In this review, we screened the literature and provided a comprehensive assessment of the distribution and antibiotic resistance properties of Vibrio species in different clinical and environmental samples in the region. This review will contribute to understanding closely the real burden of Vibrio species and the spread of antibiotic-resistant strains in the MENA region. The overall objective is to engage epidemiologists, sanitarians and public health stakeholders to address this problem under the One-health ethos.


The Vibrio genus contains many bacterial species normally found in freshwater, estuaries and marine environments. Some of these species can be transmitted by water and food and can make people severely ill. For instance, some groups of the bacterium Vibrio cholerae (serogroups O1 and O139) can cause serious watery diarrhea called cholera. Other pathogenic Vibrio bacteria can cause other types of infections such as gastroenteritis and wound infections. Some of these bacteria are becoming increasingly resistant to antibiotics, which will threaten and complicate therapy. This review discusses the occurrence and antibiotic resistance of different important Vibrio species in the Middle East and North Africa (MENA) region.


Assuntos
Antibacterianos , Vibrioses , Vibrio , Humanos , Oriente Médio/epidemiologia , Antibacterianos/farmacologia , Vibrioses/epidemiologia , Vibrioses/microbiologia , Vibrio/efeitos dos fármacos , Vibrio/genética , África do Norte/epidemiologia , Farmacorresistência Bacteriana , Testes de Sensibilidade Microbiana , Surtos de Doenças , Cólera/epidemiologia , Cólera/microbiologia , Alimentos Marinhos/microbiologia
12.
J Glob Antimicrob Resist ; 36: 59-61, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38128725

RESUMO

OBJECTIVES: In-depth phenotypic and genomic analyses on a carbapenem-resistant Escherichia coli isolate, recovered from the faeces of a farm dog in Lebanon, focusing on its antimicrobial resistance (AMR) patterns and the underlying resistome. METHODS: E. coli strain EC-106 was identified using MALDI-TOF-MS. Analyses using Carba NP, immunochromatographic assay NG Carba5, and other antimicrobial susceptibility testing were performed. Whole-genome sequencing (WGS) using the Illumina technology and different software available at the Center of Genomic Epidemiology wwere used to predict the resistome, sequence type (ST), plasmid types, and virulence genes. RESULTS: Susceptibility testing revealed that E. coli EC-106 was multi-drug resistant, including against newer antimicrobials such as imipenem-relebactam (MIC = 16 µg/mL), meropenem-vaborbactam (MIC = 16 µg/mL), and ceftazidime-avibactam (MIC > 32 µg/mL), but remained susceptible to aztreonam (MIC = 0.12 µg/mL), aztreonam-avibactam (MIC = 0.06 µg/mL), and cefiderocol (MIC = 0.5 µg/mL). WGS analyses showed that E. coli EC-106 carried 13 acquired resistance genes associated with resistance to ß-lactams (blaNDM-5 and blaTEM-1B), aminoglycosides (aac(3)-IId, aph(3')-Ia, aadA1, and aadA2), tetracyclines (tetA), amphenicols (partial catA1), macrolides (mphA), sulphonamides (sul1 and sul3), trimethoprim (dfrA12), and quaternary ammonium compounds (partial qacE). The blaNDM-5 was located on an IncX3 plasmid. The isolate was predicted to be a human pathogen (92.9%) and belonged to ST1011. CONCLUSION: To our knowledge, this is the first report of the detection of an IncX3 plasmid carrying the blaNDM-5 gene in animals in Lebanon, highlighting the severe AMR challenges in the country. Taken together, our current and previous findings suggest that blaNDM-5 might be spreading in different hosts and genetic backgrounds across clinical and non-clinical settings.


Assuntos
Proteínas de Bactérias , Infecções por Escherichia coli , Escherichia coli , beta-Lactamases , Cães , Humanos , Animais , Aztreonam/farmacologia , Fazendas , Infecções por Escherichia coli/veterinária , Infecções por Escherichia coli/epidemiologia , Farmacorresistência Bacteriana Múltipla/genética , Plasmídeos/genética , Antibacterianos/farmacologia
13.
Artigo em Inglês | MEDLINE | ID: mdl-39358927

RESUMO

INTRODUCTION: Consumer demand for pasture raised, antibiotic-free poultry products has led to an increase in pastured poultry operations within the United States. Given the level of environmental interaction and the potential increase in exposure to foodborne pathogens in these settings, a greater understanding of the prevalence and diversity of Campylobacter populations inherent within pastured poultry flocks is needed. METHODS: To achieve this, 40 pastured poultry flocks from nine farms were sampled using a farm-to-fork strategy, and Campylobacter was isolated and characterised from preharvest (faeces, soil) through postharvest (caeca, whole carcass rinse) to the final product the consumer would purchase (whole carcass rinse). RESULTS: Campylobacter was isolated from 872 of 1820 samples, showing an overall prevalence of 47.91%. The caeca showed the highest (p < 0.05) Campylobacter load (4.64 log10 CFU/mL) and prevalence (95.5%), while the final product whole carcass rinses had the lowest (p < 0.05) Campylobacter load (0.32 log10 CFU/mL) and prevalence (15.45%), suggesting that the Campylobacter load in the caeca may not be indicative of the Campylobacter load on the final product. Of the 872 positive samples, 337 Campylobacter isolates were selected for further characterisation. Campylobacter jejuni and Campylobacter coli comprised 74.18% (250/337) and 21.95% (74/337) of the selected isolates respectively. While the Campylobacter isolates displayed resistance to several antibiotics, the most common resistance for both C. jejuni and C. coli was against tetracycline (55.86% and 70.31% respectively). Multidrug resistance phenotypes (≥ 3 antibiotic classes) were relatively low for both C. jejuni (2.80%) and C. coli (9.45%). CONCLUSIONS: Campylobacter load, prevalence and diversity were more affected by farm location than by the type of sample from which the Campylobacter was isolated. Overall, these results indicated a need for farm-specific Campylobacter mitigation strategies to ensure the safety of these increasingly in-demand poultry products.

14.
Microb Drug Resist ; 30(2): 101-107, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38011748

RESUMO

Resistance to last resort antibiotics has been increasing, particularly in low- and middle-income countries such as Lebanon, which has well established challenges in antimicrobial stewardship and other public health and environmental issues. However, data on the emergence of antibiotic resistance in the community in Lebanon are limited. In this study, we assessed resistance to last resort antibiotics in the fecal samples of 111 otherwise healthy university students in north Lebanon. The results showed that 47.7% of the samples harbored extended-spectrum cephalosporin-resistant isolates, while 2.7% of the samples yielded colistin-resistant isolates. Furthermore, molecular analyses showed that the ß-lactamase gene group, blaCTX-M-1 group, was detected in the majority (93%) of screened extended-spectrum ß-lactamase isolates. In addition, the colistin-resistant Escherichia coli isolates carried mcr-1, including the novel mcr-1.26 variant, which was previously reported in clinical samples as well as in domesticated animals and the environment in Lebanon. Taken together, these findings highlight the occurrence of resistance to important antibiotics in the community, perhaps suggesting diffuse sources, including clinical and environmental settings, and multiple factors driving the spread of multidrug-resistant bacteria and resistance determinants. There is a pressing need for comprehensive antimicrobial stewardship programs and the implementation of evidence-based practices in clinical and community settings to mitigate the increasing spread of antimicrobial resistance.


Assuntos
Colistina , Proteínas de Escherichia coli , Animais , Humanos , Colistina/farmacologia , Antibacterianos/farmacologia , Cefalosporinas/farmacologia , Proteínas de Escherichia coli/genética , Universidades , Farmacorresistência Bacteriana/genética , Testes de Sensibilidade Microbiana , Escherichia coli , beta-Lactamases/genética , Monobactamas , Estudantes
15.
Microbiol Resour Announc ; 13(6): e0113923, 2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38695584

RESUMO

Imported foods play an essential role in food security and in fulfilling consumer demand. However, these foods can also carry antibiotic-resistant bacteria, which might be introduced into the country of importation. Here, we report the draft genomes of antibiotic-resistant bacteria that were isolated from imported fresh produce in Georgia, USA.

16.
J Glob Antimicrob Resist ; 36: 175-180, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38154747

RESUMO

OBJECTIVES: The contamination of fresh surface waters poses a significant burden on human health and prosperity, especially in marginalized communities with limited resources and inadequate infrastructure. Here, we performed in-depth genomic analyses of multidrug-resistant bacteria (MDR-B) isolated from Al-Oueik river water that is used for irrigation of agricultural fields in a disenfranchised area that also hosts a makeshift Syrian refugee camp. METHODS: A composite freshwater sample was filtered. Faecal coliforms were counted and extended spectrum cephalosporins and/or ertapenem resistant bacteria were screened. Isolates were identified using MALDI-TOF-MS and analysed using whole-genome sequencing (WGS) to identify the resistome, sequence types, plasmid types, and virulence genes. RESULTS: Approximately 106 CFU/100 mL of faecal coliforms were detected in the water. Four drug-resistant Gram-negative bacteria were identified, namely Escherichia coli, Klebsiella pneumoniae, Enterobacter hormaechei, and Pseudomonas otitidis. Notably, the E. coli isolate harboured blaNDM-5 and a YRIN-inserted PBP3, representing an emerging public health challenge. The K. pneumoniae isolate carried blaSHV-187 as well as mutations in the gene encoding the OmpK37 porin. Enterobacter hormaechei and P. otitidis harboured blaACT-16 and blaPOM-1, respectively. CONCLUSION: This report provides comprehensive genomic analyses of MDR-B in irrigation water in Lebanon. Our results further support that irrigation water contaminated with faecal material can be a reservoir of important MDR-B, which can spread to adjacent agricultural fields and other water bodies, posing both public health and food safety issues. Therefore, there is an urgent need to implement effective water quality monitoring and management programs to control the proliferation of antibiotic-resistant pathogens in irrigation water in Lebanon.


Assuntos
Escherichia coli , Rios , Humanos , Escherichia coli/genética , Rios/microbiologia , Enterobacter/genética , Plasmídeos/genética , Klebsiella pneumoniae/genética , Bactérias Gram-Negativas
18.
PLoS One ; 18(3): e0282844, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36913372

RESUMO

BACKGROUND: There is little information on the epidemiology of enteric pathogens in Lebanon, a low- and middle-income country that suffers from a myriad of public health challenges. To address this knowledge gap, we aimed to assess the prevalence of enteric pathogens, identify risk factors and seasonal variations, and describe associations between pathogens among diarrheic patients in the Lebanese community. METHODOLOGY AND PRINCIPAL FINDINGS: A multicenter cross-sectional community-based study was conducted in the north of Lebanon. Stool samples were collected from 360 outpatients suffering from acute diarrhea. Based on fecal examination using the BioFire® FilmArray® Gastrointestinal Panel assay, the overall prevalence of enteric infections was 86.1%. Enteroaggregative Escherichia coli (EAEC) was the most frequently identified (41.7%), followed by enteropathogenic E. coli (EPEC) (40.8%) and rotavirus A (27.5%). Notably, two cases of Vibrio cholerae were identified, while Cryptosporidium spp. (6.9%) was the most common parasitic agent. Overall, 27.7% (86/310) of the cases were single infections, and the majority, 73.3% (224/310), were mixed infections. Multivariable logistic regression models showed that enterotoxigenic E. coli (ETEC) and rotavirus A infections were significantly more likely to occur in the fall and winter compared to the summer. Rotavirus A infections significantly decreased with age but increased in patients living in rural areas or suffering from vomiting. We identified strong associations in the co-occurrence of EAEC, EPEC, and ETEC infections and a higher percentage of rotavirus A and norovirus GI/GII infections among EAEC-positive cases. CONCLUSIONS: Several of the enteric pathogens reported in this study are not routinely tested in Lebanese clinical laboratories. However, anecdotal evidence suggests that diarrheal diseases are on the rise due to widespread pollution and the deterioration of the economy. Therefore, this study is of paramount importance to identify circulating etiologic agents and prioritize dwindling resources to control them and limit outbreaks in the future.


Assuntos
Criptosporidiose , Cryptosporidium , Escherichia coli Enteropatogênica , Escherichia coli Enterotoxigênica , Norovirus , Infecções por Rotavirus , Rotavirus , Humanos , Prevalência , Estudos Transversais , Estações do Ano , Diarreia , Infecções por Rotavirus/epidemiologia , Fezes/parasitologia
19.
Foods ; 13(1)2023 Dec 29.
Artigo em Inglês | MEDLINE | ID: mdl-38201146

RESUMO

A key contributor to foodborne illnesses is consuming contaminated ready-to-eat foods, including raw meats. The latter is a common practice in Lebanon, a country that suffers from widespread pollution and food safety challenges. However, studies on the safety of raw meat consumption in Lebanon are limited. In this study, an attempt was made to investigate the knowledge, attitudes, and practices (KAPs) of the Lebanese population toward the potential risk associated with the consumption of raw meats, and to identify factors that affect KAP levels. An online survey (n = 577) was administered to Lebanese adults aged 18 years and above to assess their KAPs. The results showed that 74.5% of the participants consumed raw meat, 44% had good food safety knowledge, and 30.7% exhibited good practices. However, more than half of the participants (61.9%) showed a positive attitude toward food safety. There was a significant association between knowledge and attitude (p < 0.001), attitude and practices (p < 0.001), and knowledge and practices (p < 0.001), thereby indicating that an increase in food safety education could translate into better practices in this population. Accordingly, efforts to enhance education on food safety are warranted to reduce the potential risk of food poisoning associated with raw meat consumption in Lebanon.

20.
Antibiotics (Basel) ; 12(9)2023 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-37760710

RESUMO

Antimicrobial resistance is a serious threat, particularly in low- and middle-income countries (LMICs). Antifungal resistance is often underestimated in both healthcare and non-clinical settings. In LMICs, it is believed that the inappropriate use of antifungals, limited surveillance systems, and low diagnostic capacities are significant drivers of resistance. Like other LMICs, Lebanon lacks antifungal use and resistance surveillance programs, and the impact of antifungal resistance in the country remains unclear, especially during the unfolding economic crisis that has severely affected medical care and access to safe food and water. Interestingly, the widespread use of antifungals in medicine and agriculture has raised concerns about the development of antifungal resistance in Lebanon. In this light, we aimed to survey available antifungal drugs in the country and evaluate susceptibility patterns of prevalent fungal species to guide empiric treatments and develop antifungal stewardship programs in Lebanon. We noted that the economic crisis resulted in significant increases in antifungal drug prices. Additionally, a comprehensive literature search across PubMed, ScienceDirect, and Google Scholar databases identified 15 studies on fungal infections and antifungal resistance conducted from 1998 to 2023 in Lebanon. While data on antifungal resistance are limited, 87% of available studies in Lebanon focused on candidiasis, while the remaining 13% were on aspergillosis. Overall, we observed a marked antimicrobial resistance among Candida and Aspergillus species. Additionally, incidences of Candida auris infections have increased in Lebanese hospitals during the COVID-19 pandemic, with a uniform resistance to fluconazole and amphotericin-B. Taken together, a One Health approach, reliable diagnostics, and prudent antifungal use are required to control the spread of resistant fungal pathogens in healthcare and agricultural settings.

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