16 documents found, page 1 of 2
Challenges of Providing Safe Drinking Water in African Rural Communities: A Cas...
Silveira, Pedro; Rebelo, Maria Teresa; Salvador, DanielAccess to safe drinking water is a fundamental human right, yet it remains a global challenge affecting nearly 2 billion people, particularly in Africa in regions such as Guinea-Bissau. This study investigated the microbiological and physicochemical quality of drinking water in four rural areas of the Oio region of Guinea-Bissau—Cangha N’Tchugal, Cajaque, Infaidi and Insanha—over a one-year period (October 2022...
Monitoring enteric viruses in different water matrices : implementation of meth...
Salvador, DanielMonitoring the water quality is a requisite to prevent outbreaks related to waterborne diseases, predominantly caused by enteric pathogens, such as bacteria and viruses. Enteric RNA viruses are transmitted to humans usually via the fecal-oral route and water is recognized as an important transmission vehicle. This project aimed to monitor Enterovirus, Norovirus from two genogroups (NoV GI and NoV GII), hepatiti...
Assessment of water quality parameters and their seasonal behaviour in a Portug...
Chaves, Raquel S.; Salvador, Daniel; Nogueira, Paulo Jorge; Santos, Miguel M.; Aprisco, Paula; Neto, Célia; Cardoso, Vítor; Benoliel, Maria J.Water quality monitoring is a fundamental tool in the management of freshwater resources. The purpose of monitoring is to provide meaningful quality data for local action planning and catchment-wide decision making. The assessment of water quality is crucial to guarantee the efficient operation of the Water Treatment Plants (WTPs), promoting health conditions and contributing for a more sustainable urban water ...
Environmental and Adaptive Changes Necessitate a Paradigm Shift for Indicators ...
Teixeira, Pedro; Salvador, Daniel; Brandão, João; Ahmed, Warish; Sadowsky, Michael J.; Valério, ElisabeteChanges in the occurrence, distribution, and seasonal variation of waterborne pathogens due to global climate change may increase the risk of human exposure to these microorganisms, thus heightening the need for more reliable surveillance systems. Routine monitoring of drinking water supplies and recreational waters is performed using fecal indicator microorganisms, such as Escherichia coli, Enterococcus spp., ...
Deteção de vírus entéricos em amostras de água natural superficial e de água pa...
Salvador, Daniel; Caeiro, Maria; Aguilar, Joana; Benoliel, Maria João; Neto, CéliaWater-related infectious diseases are important causes of morbidity and mortality. Enterovirus and Hepatitis A and E viruses are, among others, representative of the enteric viruses, which are disease-causing agents mainly transmitted by the oral-fecal route, through water. The objective of this study is to search for enteric viruses by reverse transcription followed by Real-time PCR (RT-qPCR), in samples of na...
Monitoring waterborne pathogens in surface and drinking waters : are water trea...
Salvador, Daniel; Caeiro, Maria; Serejo, Fátima; Nogueira, Paulo Jorge; Carneiro, Rui Neves; Neto, CéliaMonitoring the quality of water is a requisite to prevent outbreaks related to waterborne diseases, predominantly caused by pathogens like enteric viruses, usually transmitted via the fecal-oral route. This study aimed to survey a group of enteric viruses (Enterovirus, Norovirus genogroups I and II, and hepatitis A virus) in two surface water sources of drinking water, also intending to evaluate the extent of t...
Environmental and adaptive changes necessitate a paradigm shift for indicators ...
Teixeira, Pedro; Salvador, Daniel; Brandão, João; Ahmed, Warish; Sadowsky, MichaelChanges in the occurrence, distribution, and seasonal variation of waterborne pathogens due to global climate change may increase the risk of human exposure to these microorganisms, thus heightening the need for more reliable surveillance systems. Routine monitoring of drinking water supplies and recreational waters is performed using fecal indicator microorganisms, such as Escherichia coli, Enterococcus spp., ...
Assessment of the presence of Hepatitis E virus in surface water and drinking w...
Salvador, Daniel; Neto, Célia; Benoliel, Maria João; Caeiro, M. F.Hepatitis E virus (HEV) is a non-enveloped single-stranded positive-sense RNA virus, belonging to the Hepeviridae family, resistant to environmental conditions, and transmitted by the consumption of contaminated water. This virus is responsible for both sporadic and epidemic outbreaks, leading to thousands of infections per year in several countries, and is thus considered an emerging disease in Europe and Asia...
Evaluating the influence of light intensity in mcyA gene expression and microcy...
Salvador, Daniel; Churro, Catarina; Valério, ElisabeteCyanobacteria are phytoplanktonic organisms widely occurring in freshwaters, being frequently associated with the production of toxins, especially microcystins (MCs). MCs are produced non-ribosomally by a multienzyme complex (mcy genes). It has been reported that environmental factors, such as light intensity, can influence toxin production. The aim of this study was to assess the influence of light intensity i...
Evaluating the influence of light intensity in mcyA gene expression and microcy...
Salvador, Daniel; Churro, Catarina; Valério, ElisabeteCyanobacteria are phytoplanktonic organisms widely occurring in freshwaters, being frequently associated with the production of toxins, namely microcystins (MCs). MCs are produced non-ribosomally by a multienzyme complex (mcy genes). It has been reported that environmental factors, such as light intensity, can influence toxin production. The aim of this study was to assess the influence of light intensity in th...