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https://www.readbyqxmd.com/read/27903324/epidemiological-and-serological-investigation-of-a-waterborne-campylobacter-jejuni-outbreak-in-a-danish-town
#1
K Gaardbo Kuhn, G Falkenhorst, H-D Emborg, T Ceper, M Torpdahl, K A Krogfelt, S Ethelberg, K Mølbak
Following an unusually heavy rainfall in June 2009, a community-wide outbreak of Campylobacter gastroenteritis occurred in a small Danish town. The outbreak investigation consisted of (1) a cohort study using an e-questionnaire of disease determinants, (2) microbiological study of stool samples, (3) serological study of blood samples from cases and asymptomatic members of case households, and (4) environmental analyses of the water distribution system. The questionnaire study identified 163 cases (respondent attack rate 16%)...
December 1, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27899145/bibliometric-analysis-of-publications-on-campylobacter-2000-2015
#2
Waleed M Sweileh, Samah W Al-Jabi, Ansam F Sawalha, Adham S AbuTaha, Sa'ed H Zyoud
BACKGROUND: Campylobacter species are widespread zoonotic pathogens. Campylobacter jejuni causes a form of gastroenteritis called campylobacteriosis. Campylobacter drug resistance is considered a serious threat. In order to better understand national and international research output on Campylobacter, we conducted this bibliometric overview of publications on Campylobacter. This study can be used to assess extent of interaction and response of researchers, food regulators, and health policy makers to global burden of campylobacateriosis...
November 29, 2016: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/27891118/colistin-in-pig-production-chemistry-mechanism-of-antibacterial-action-microbial-resistance-emergence-and-one-health-perspectives
#3
REVIEW
Mohamed Rhouma, Francis Beaudry, William Thériault, Ann Letellier
Colistin (Polymyxin E) is one of the few cationic antimicrobial peptides commercialized in both human and veterinary medicine. For several years now, colistin has been considered the last line of defense against infections caused by multidrug-resistant Gram-negative such as Acinetobacter baumannii, Pseudomonas aeruginosa, and Klebsiella pneumoniae. Colistin has been extensively used orally since the 1960s in food animals and particularly in swine for the control of Enterobacteriaceae infections. However, with the recent discovery of plasmid-mediated colistin resistance encoded by the mcr-1 gene and the higher prevalence of samples harboring this gene in animal isolates compared to other origins, livestock has been singled out as the principal reservoir for colistin resistance amplification and spread...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27878781/successful-elimination-of-extended-spectrum-beta-lactamase-esbl-producing-nosocomial-bacteria-at-a-neonatal-intensive-care-unit
#4
Borbála Szél, Zsolt Reiger, Edit Urbán, Andrea Lázár, Krisztina Mader, Ivelina Damjanova, Kamilla Nagy, Gyula Tálosi
BACKGROUND: Extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria are highly dangerous to neonates. At our Neonatal Intensive Care Unit (NICU), the presence of these bacteria became so threatening in 2011 that immediate intervention was required. METHODS: This study was conducted during a nearly two-year period consisting of three phases: retrospective (9 months), educational (3 months) and prospective (9 months). Based on retrospective data analysis, a complex management plan was devised involving the introduction of the INSURE protocol, changes to the antibiotic regimen, microbiological screening at short intervals, progressive feeding, a safer bathing protocol, staff hand hygiene training and continuous monitoring of the number of newly infected and newly colonized patients...
November 23, 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27870334/web-alert-electron-microscopy-in-environmental-microbiology-an-annotated-selection-of-world-wide-web-sites-relevant-to-the-topics-in-environmental-microbiology
#5
Lawrence P Wackett
No abstract text is available yet for this article.
November 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27867713/wavelength-normalized-spectroscopic-analysis-of-staphylococcus-aureus-and-pseudomonas-aeruginosa-growth-rates
#6
Samantha E McBirney, Kristy Trinh, Annie Wong-Beringer, Andrea M Armani
Optical density (OD) measurements are the standard approach used in microbiology for characterizing bacteria concentrations in culture media. OD is based on measuring the optical absorbance of a sample at a single wavelength, and any error will propagate through all calculations, leading to reproducibility issues. Here, we use the conventional OD technique to measure the growth rates of two different species of bacteria, Pseudomonas aeruginosa and Staphylococcus aureus. The same samples are also analyzed over the entire UV-Vis wavelength spectrum, allowing a distinctly different strategy for data analysis to be performed...
October 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27863959/transmission-of-staphylococcus-aureus-between-health-care-workers-the-environment-and-patients-in-an-intensive-care-unit-a-longitudinal-cohort-study-based-on-whole-genome-sequencing
#7
James R Price, Kevin Cole, Andrew Bexley, Vasiliki Kostiou, David W Eyre, Tanya Golubchik, Daniel J Wilson, Derrick W Crook, A Sarah Walker, Timothy E A Peto, Martin J Llewelyn, John Paul
BACKGROUND: Health-care workers have been implicated in nosocomial outbreaks of Staphylococcus aureus, but the dearth of evidence from non-outbreak situations means that routine health-care worker screening and S aureus eradication are controversial. We aimed to determine how often S aureus is transmitted from health-care workers or the environment to patients in an intensive care unit (ICU) and a high-dependency unit (HDU) where standard infection control measures were in place. METHODS: In this longitudinal cohort study, we systematically sampled health-care workers, the environment, and patients over 14 months at the ICU and HDU of the Royal Sussex County Hospital, Brighton, England...
November 15, 2016: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/27862682/membrane-filtration-immobilization-technique-a-simple-and-novel-method-for-primary-isolation-and-enrichment-of-bacteriophages
#8
Gaurav S Ghugare, Aparna Nair, Vijay Nimkande, Priyanka Sarode, Prachi Rangari, Krishna Khairnar
AIM: To develop a method for isolation and enrichment of bacteriophages selectively against specific bacteria coupled with membrane filtration technique. METHODS AND RESULTS: Rapid isolation and concentration of host specific bacteriophages was achieved by exposure of the sample suspected to contain bacteriophages to specific host immobilized on a 0.45μm membrane in a membrane filtration unit. The principle behind this method is exploitation of host specific interaction of bacteriophages with their host and maximizing this interaction using classic membrane filtration method...
November 8, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27854280/wastewater-biosolid-composting-optimization-based-on-uv-vnir-spectroscopy-monitoring
#9
Beatriz Temporal-Lara, Ignacio Melendez-Pastor, Ignacio Gómez, Jose Navarro-Pedreño
Conventional wastewater treatment generates large amounts of organic matter-rich sludge that requires adequate treatment to avoid public health and environmental problems. The mixture of wastewater sludge and some bulking agents produces a biosolid to be composted at adequate composting facilities. The composting process is chemically and microbiologically complex and requires an adequate aeration of the biosolid (e.g., with a turner machine) for proper maturation of the compost. Adequate (near) real-time monitoring of the compost maturity process is highly difficult and the operation of composting facilities is not as automatized as other industrial processes...
November 15, 2016: Sensors
https://www.readbyqxmd.com/read/27853708/floqswab%C3%A2-optimisation-of-procedures-for-the-recovery-of-microbiological-samples-from-surfaces
#10
Guido Finazzi, Marina Nadia Losio, Giorgio Varisco
The FLOQSwab™ is a specimen collection device worldwide recognised for its superior performance in the clinical diagnostics. The aim of this work was to evaluate FLOQSwab™ for the recovery of microbiological samples from surfaces compared to the traditional swab (rayon tipped swab) as per ISO 18593:2004 standard. The FLOQSwab™, thanks to its innovative manufacturing technology, allows improving the efficiency of recovery and release of analyte. The study has been divided into two experiments. In the first experiment the two swabs were evaluated for their capacity to recover and release the analyte (three different bacterial loads of Escherichia coli)...
June 3, 2016: Italian Journal of Food Safety
https://www.readbyqxmd.com/read/27852955/microbiological-efficacy-of-early-mrsa-treatment-in-cystic-fibrosis-in-a-randomised-controlled-trial
#11
Marianne Sponer Muhlebach, Valeria Beckett, Elena Popowitch, Melissa B Miller, Arthur Baines, Nicole Mayer-Hamblett, Edith T Zemanick, Wynton C Hoover, Jill M VanDalfsen, Preston Campbell, Christopher H Goss
OBJECTIVE: To evaluate microbiological effectiveness, that is, culture negativity of a non-blinded eradication protocol (Rx) compared with observation (Obs) in clinically stable cystic fibrosis participants with newly positive methicillin resistant Staphylococcus aureus (MRSA) cultures. DESIGN: This non-blinded trial randomised participants ages 4-45 years with first or early (≤2 positive cultures within 3 years) MRSA-positive culture without MRSA-active antibiotics within 4 weeks 1:1 to Rx or Obs...
November 15, 2016: Thorax
https://www.readbyqxmd.com/read/27845477/microbiological-environmental-monitoring-in-high-risk-departments-during-building-activities-in-a-hospital-site
#12
V Coroneo, L Marras, A Desogus, M T Orano, M E Cocco, M Schintu
BACKGROUND: This study examines the microbial and fungal contamination associated with the presence of renovation works in a hospital site in Sardinia (Italy). METHODS: Microbiological environmental monitoring was carried out before, during and at the conclusion of the works in the Ophthalmology Department in view of a risk assessment procedure. RESULTS: Although the median values of microbial and fungal counts were found raised during the works, protective measures set out by the internal procedures limited the contamination level...
November 2016: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/27843438/a-decade-long-commitment-to-antimicrobial-resistance-surveillance-in-portugal
#13
REVIEW
Catarina M Marinho, Tiago Santos, Alexandre Gonçalves, Patrícia Poeta, Gilberto Igrejas
Antimicrobial resistance (AMR) is a worldwide problem with serious health and economic repercussions. Since the 1940s, underuse, overuse, and misuse of antibiotics have had a significant environmental downside. Large amounts of antibiotics not fully metabolized after use in human and veterinary medicine, and other applications, are annually released into the environment. The result has been the development and dissemination of antibiotic-resistant bacteria due to many years of selective pressure. Surveillance of AMR provides important information that helps in monitoring and understanding how resistance mechanisms develop and disseminate within different environments...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27843109/non-cholera-vibrios-the-microbial-barometer-of-climate-change
#14
REVIEW
Craig Baker-Austin, Joaquin Trinanes, Narjol Gonzalez-Escalona, Jaime Martinez-Urtaza
There is a growing interest in the role of climate change in driving the spread of waterborne infectious diseases, such as those caused by bacterial pathogens. One particular group of pathogenic bacteria - vibrios - are a globally important cause of diseases in humans and aquatic animals. These Gram-negative bacteria, including the species Vibrio vulnificus, Vibrio parahaemolyticus and Vibrio cholerae, grow in warm, low-salinity waters, and their abundance in the natural environment mirrors ambient environmental temperatures...
November 11, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27833105/environmental-microbiology-a-small-soil-bacterium-dominates
#15
Ursula Hofer
No abstract text is available yet for this article.
November 11, 2016: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/27832305/constructed-wetlands-revisited-microbial-diversity-in-the-omics-era
#16
REVIEW
Olga Sánchez
Constructed wetlands (CWs) constitute an interesting alternative option to conventional systems for wastewater treatment. This technology is based on the utilization of the concerted activity of microorganisms for the removal of contaminants. Consequently, knowledge on the microbial assemblages dwelling CWs and the different environmental factors which can alter their activities is crucial for understanding their performance. In the last decades, the use of molecular techniques to characterize these communities and more recently, application of -omics tools, have broaden our view of microbial diversity and function in wastewater microbiology...
November 10, 2016: Microbial Ecology
https://www.readbyqxmd.com/read/27825766/microbiology-of-organic-and-conventionally-grown-fresh-produce
#17
REVIEW
Daniele F Maffei, Erika Y Batalha, Mariza Landgraf, Donald W Schaffner, Bernadette D G M Franco
Fresh produce is a generalized term for a group of farm-produced crops, including fruits and vegetables. Organic agriculture has been on the rise and attracting the attention of the food production sector, since it uses eco-agricultural principles that are ostensibly environmentally-friendly and provides products potentially free from the residues of agrochemicals. Organic farming practices such as the use of animal manure can however increase the risk of contamination by enteric pathogenic microorganisms and may consequently pose health risks...
October 27, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/27825484/acanthamoeba-spp-as-a-universal-host-for-pathogenic-microorganisms-one-bridge-from-environment-to-host-virulence
#18
REVIEW
Allan J Guimaraes, Kamilla Xavier Gomes, Juliana Reis Cortines, José Mauro Peralta, Regina H Saramago Peralta
Free-living amoebas (FLA) are ubiquitous environmental protists that have enormously contributed to the microbiological contamination of water sources. FLAs have displayed resistance to environmental adversities and germicides and have played important roles in the population control of microbial communities due to its predatory behavior and microbicidal activity. However, some organisms have developed resistance to the intracellular milieu of amoebas, as in the case of Acanthamoebas, which in turn, have been functioning as excellent reservoirs for amoeba-resistant microorganisms (ARMs), such as bacteria, viruses and fungi...
December 2016: Microbiological Research
https://www.readbyqxmd.com/read/27822528/urban-transit-system-microbial-communities-differ-by-surface-type-and-interaction-with-humans-and-the-environment
#19
Tiffany Hsu, Regina Joice, Jose Vallarino, Galeb Abu-Ali, Erica M Hartmann, Afrah Shafquat, Casey DuLong, Catherine Baranowski, Dirk Gevers, Jessica L Green, Xochitl C Morgan, John D Spengler, Curtis Huttenhower
Public transit systems are ideal for studying the urban microbiome and interindividual community transfer. In this study, we used 16S amplicon and shotgun metagenomic sequencing to profile microbial communities on multiple transit surfaces across train lines and stations in the Boston metropolitan transit system. The greatest determinant of microbial community structure was the transit surface type. In contrast, little variation was observed between geographically distinct train lines and stations serving different demographics...
May 2016: MSystems
https://www.readbyqxmd.com/read/27822524/from-sample-to-multi-omics-conclusions-in-under-48-hours
#20
Robert A Quinn, Jose A Navas-Molina, Embriette R Hyde, Se Jin Song, Yoshiki Vázquez-Baeza, Greg Humphrey, James Gaffney, Jeremiah J Minich, Alexey V Melnik, Jakob Herschend, Jeff DeReus, Austin Durant, Rachel J Dutton, Mahdieh Khosroheidari, Clifford Green, Ricardo da Silva, Pieter C Dorrestein, Rob Knight
Multi-omics methods have greatly advanced our understanding of the biological organism and its microbial associates. However, they are not routinely used in clinical or industrial applications, due to the length of time required to generate and analyze omics data. Here, we applied a novel integrated omics pipeline for the analysis of human and environmental samples in under 48 h. Human subjects that ferment their own foods provided swab samples from skin, feces, oral cavity, fermented foods, and household surfaces to assess the impact of home food fermentation on their microbial and chemical ecology...
March 2016: MSystems
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