Presence of enteric viruses in water samples for consumption in Colombia: Challenges for supply systems.

Biomedica

Laboratorio de Virus Entéricos, Grupo de Virología, Subdirección Laboratorio Nacional de Referencia, Dirección de Redes en Salud Pública, Instituto Nacional de Salud, Bogotá, D.C., Colombia.

Published: April 2016

Introduction: Since drinking water can be a vehicle for the transmission of pathogens, the detection of enteric viruses in these water samples is essential to establish the appropriate measures to control and prevent associated diseases. 

Objective: To analyze the results obtained for enteric viruses in water samples for human consumption received at the Colombian Instituto Nacional de Salud and establish their association with the data on water quality in Colombian municipalities. 

Materials And Methods: We conducted a descriptive-retrospective analysis of the results obtained in the detection of rotavirus, enterovirus, hepatitis A virus and adenovirus in water samples received for complementary studies of enteric hepatitis, acute diarrheal disease and foodborne diseases. Data were correlated with the results of water quality surveillance determined by the national human consumption water quality index (IRCA). 

Results: Of the 288 samples processed from 102 Colombian municipalities, 50.7% were positive for viruses: 26.73% for hepatitis A virus, 20.48% for enterovirus and rotavirus and 18.05% for adenovirus. Viruses were detected in 48.26% of non-treated water samples and in 45.83% of treated water samples. The IRCA index showed no correlation with the presence of viruses. 

Conclusions: The presence of viruses in water represents a public health risk and, therefore, the prevention of virus transmission through water requires appropriate policies to reinforce water supply systems and improve epidemiological surveillance.

Download full-text PDF

Source
http://dx.doi.org/10.7705/biomedica.v36i0.2987DOI Listing

Publication Analysis

Top Keywords

water samples
24
viruses water
16
water
13
enteric viruses
12
water quality
12
supply systems
8
human consumption
8
hepatitis virus
8
samples
7
viruses
6

Similar Publications

Ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF-MS/MS) was used to rapidly identify the chemical components in Dracocephalum moldavica, and UPLC was employed to determine the content of its main components. MS analysis was performed using an electrospray ionization(ESI) source and data were collected in the negative ion mode. By comparing the retention time and mass spectra of reference compounds, and using a self-built compound database and the PubChem database, 68 compounds were identified from D.

View Article and Find Full Text PDF

Historic copper mining left a legacy of metal-rich tailings resulting in ecological impacts along and within Torch Lake, an area of concern in the Keweenaw Peninsula, Michigan, USA. Given the toxicity of copper to invertebrates, this study assessed the influence of this legacy on present day nearshore aquatic and terrestrial ecosystems. We measured the metal (Co, Cu, Ni, Zn, Cd) and metalloid (As) concentrations in sediment, pore water, surface water, larval and adult insects, and two riparian spider taxa collected from Torch Lake and a nearby reference lake.

View Article and Find Full Text PDF

A Schiff base-functionalized chitosan magnetic bio-nanocomposite for efficient removal of Pb (II) and Cd (II) ions from aqueous solutions.

Int J Biol Macromol

January 2025

Department of Chemistry, Faculty of Science, Arak University, Arak 38481-77584, Iran; Institute of Nanosciences &Nanotechnology, Arak University, Arak, Iran. Electronic address:

The rapid industrialization and human activities in catchments have posed notable global challenges in removing of heavy metal contaminants from wastewater. Here, Schiff-bases (SB) of cyanoguanidine (CG) and salicylaldehyde (SA) were covalently grafted on a magnetic nanocomposite of chitosan to form a hybrid magnetic nanostructure (FeO@CS-CGSB). The synthesized structure was characterized using various techniques such as Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM), dynamic light scattering (DLS), zeta potential, and Brunauer-Emmett-Teller surface area analysis (BET).

View Article and Find Full Text PDF

Dual-mode luminescence and colorimetric sensing for Al and Fe/Fe ions in water using a zinc coordination polymer.

Spectrochim Acta A Mol Biomol Spectrosc

January 2025

Materials Chemistry Research Center, Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002 Thailand. Electronic address:

A zinc(II) coordination polymer, [Zn(Hdhtp)(2,2'-bpy)(HO)] (1), has been utilized as a dual-mode luminescence-colorimetric sensor (Hdhtp = 2,5-dihydroxy terephthalate and 2,2'-bpy = 2,2'-bipyridine). The presence of hydroxyl groups in Hdhtp can promote excited-state intra- and intermolecular proton transfer (ESIPT) phenomena. Therefore, compound 1, which displays high stability in aqueous environments, exhibits a strong green-yellow photoluminescence.

View Article and Find Full Text PDF

Development of a fluorescent probe based on the cyanine skeleton for the detection of PhSH.

Spectrochim Acta A Mol Biomol Spectrosc

January 2025

College of Food Science and Light Industry, Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China. Electronic address:

In this study, a cyanine skeleton fluorescent parent core was designed based on the intramolecular charge transfer (ICT) principle, and 2, 4-dinitrofluorobenzene (DNFB) was used as the specific recognition site for phenylthiophene (PhSH). The probe showed a fluorescence transition from colorless to red under 410 nm excitation, which had the characteristics of fast response, high selectivity, low detection limit (55 nM), and the fluorescence intensity showed a positive linear correlation with PhSH concentration in the range of 0-100 μM (R = 0.9921).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!