A5079741526- Viral gastroenteritis research and epidemiology
- Bacteriophages and microbial interactions
- Fecal contamination and water quality
- Aquatic Ecosystems and Phytoplankton Dynamics
- Microbial Community Ecology and Physiology
- Hepatitis Viruses Studies and Epidemiology
- Animal Disease Management and Epidemiology
- Infection Control and Ventilation
- Viral Infections and Immunology Research
- Wastewater Treatment and Reuse
- Polyomavirus and related diseases
- Energy and Environment Impacts
- Animal Virus Infections Studies
- Marine and coastal ecosystems
- Liver Disease and Transplantation
- Water Treatment and Disinfection
- Child Nutrition and Water Access
- Water-Energy-Food Nexus Studies
- Advanced oxidation water treatment
- Protist diversity and phylogeny
- Respiratory viral infections research
- Listeria monocytogenes in Food Safety
- Agriculture, Soil, Plant Science
- Photovoltaic Systems and Sustainability
- Metabolism and Genetic Disorders
École Polytechnique Fédérale de Lausanne
2013-2025
Universitat de Barcelona
2009-2018
École Nationale de l’Aviation Civile
2013-2017
Clínica Diagonal
2013-2014
Oxfam Intermón
2011
Abstract Predicting responses of plankton to variations in essential nutrients is hampered by limited situ measurements, a poor understanding community composition, and the lack reference gene catalogs for key taxa. Iron driver dynamics and, therefore, global biogeochemical cycles climate. To assess impact iron availability on communities, we explored comprehensive bio‐oceanographic bio‐omics data sets from Tara Oceans context products two state‐of‐the‐art scale models. We obtained novel...
Recently, three new polyomaviruses (KI, WU and Merkel cell polyomavirus) have been reported to infect humans. It has also suggested that lymphotropic polyomavirus, a virus of simian origin, infects KI detected mainly in specimens from the respiratory tract while polyomavirus described very high percentage carcinomas. The distribution, excretion level transmission routes these viruses remain unknown. Here we analyzed presence characteristics newly human urban sewage river water order assess...
The aim of the study was to analyse evolution prevalence HAV and HEV in population eastern Spain by analysing viruses excreted urban sewage. Raw sewage samples were collected analysed during several years using RT-PCR techniques sequencing analysis. Two limiting regions analysed, one them having implemented vaccination programs. Acute symptomatic cases also examined. Results compared with those from previous studies area identical methodology. percentage positive fell 57.4% 3.1% 5–10 two...
Many different viruses are excreted by humans and animals frequently detected in fecal contaminated waters causing public health concerns. Classical bacterial indicator such as E. coli enterococci could fail to predict the risk for waterborne pathogens viruses. Moreover, presence levels of indicators do not always correlate with concentration viruses, especially when these present low concentrations. Our research group has proposed new viral methodologies determining pollution environmental...
This study involved collaboration between three centres with expertise in viruses, bacteria and protozoa. The focus of the research was dissemination removal pathogens faecal indicators two sewage treatment plants (STP1 STP2) using tertiary treatments. Samples were collected over a period five months through processes. Analysis samples revealed that not efficient at removing tested during study. From entry point (raw sewage) to effluent level (tertiary water), experimental results showed...
Hepatitis E virus (HEV) is transmitted via the fecal–oral route and has been recognized as a common source of large waterborne outbreaks involving contaminated water in developing countries. Thus, there need to produce experimental data on disinfection kinetics HEV by chlorine samples with diverse levels fecal contamination. Here, inactivation human adenovirus C serotype 2 (HAdV2), used reference virus, was monitored using immunofluorescence quantitative reverse transcription polymerase...
ABSTRACT Solar disinfection (SODIS) of drinking water in polyethylene terephthalate (PET) bottles is a simple, efficient point-of-use technique for the inactivation many bacterial pathogens. In contrast, efficiency SODIS against viruses not well known. this work, we studied bacteriophages (MS2 and ϕX174) human (echovirus 11 adenovirus type 2) by SODIS. We conducted experiments PET exposed to (simulated) sunlight at different temperatures (15, 22, 26, 40°C) sources diverse compositions...
ABSTRACT Viruses excreted by humans affect the commercial and recreational use of coastal water. Shellfish produced in contaminated waters have been linked to many episodes outbreaks viral gastroenteritis, as well other food-borne diseases worldwide. The risk can be reduced appropriate treatment following harvesting depuration. kinetics inactivation murine norovirus 1 human adenovirus 2 natural artificial seawater free available chlorine was studied quantifying genomic copies (GC) using...
Ultraviolet light in the UVC range is a commonly used disinfectant to control viruses clinical settings and water treatment. However, it currently unknown whether human viral pathogens may develop resistance such stressor. Here, we investigate adaptation of an enteric pathogen, echovirus 11, disinfection by UVC, characterized underlying phenotypic genotypic changes. Repeated exposure lead reduction inactivation rate approximately 15 per cent compared that wild-type populations. Time-series...
Common water disinfectants like chlorine have been reported to select for resistant viruses, yet little attention has devoted characterizing disinfection resistance. Here, we investigated the resistance of MS2 coliphage inactivation by dioxide (ClO2). ClO2 inactivates degrading its structural proteins, thereby disrupting ability attach and infect host. ClO2-resistant virus populations emerged not only after repeated cycles followed regrowth but also dilution-regrowth in absence ClO2. The...
The emergence of waterborne viruses with resistance to disinfection has been demonstrated in the laboratory and environment. Yet, implications such for virus control remain obscure. In this study we investigate if a given method exhibit cross-resistance other disinfectants. Chlorine dioxide (ClO2)- or UV-resistant populations echovirus 11 were exposed five inactivating treatments (free chlorine, ClO2, UV radiation, sunlight, heat), extent was determined. ClO2-resistant population exhibited...
Waterborne viruses can exhibit resistance to common water disinfectants, yet the mechanisms that allow them tolerate disinfection are poorly understood. Here, we generated echovirus 11 (E11) with chlorine dioxide (ClO2) by experimental evolution, and assessed associated genotypic phenotypic traits. ClO2 emerged after E11 populations were repeatedly reduced (either ClO2-exposure or dilution) then regrown in cell culture. The was linked an improved capacity of bind its host cells, which...
Hepatitis E virus (HEV) is a common cause of water-borne acute hepatitis in areas with poor sanitation. In 2004 an outbreak HEV infection affected around 2,000 people Eastern Chad (Dar Sila). This paper describes the decrease incidence jaundice syndrome (AJS) from until 2009 when mean 0.48 cases/1,000 people/year was recorded region. Outbreaks AJS were identified some camps 2007 and 2008. Moreover, water samples drinking sources screened for human adenoviruses considered as viral indicators...
Poultry farming may introduce pathogens into the environment and food chains. High concentrations of chicken/turkey parvoviruses were detected in chicken stools slaughterhouse downstream urban wastewaters by applying new PCR-based specific detection quantification techniques. Our results confirm that be useful viral indicators poultry fecal contamination.
Waterborne human viruses can persist in the environment, causing a risk to health over long periods of time. In this work, we demonstrate that both freshwater and seawater environments, indigenous bacteria protists graze on waterborne thereby reduce their persistence. We furthermore efficiency grazing process depends temperature, virus type, protist species. These findings may facilitate design biological methods for disinfection water wastewater.