Microbial and potentially toxic elements risk assessment in high Andean river water based on Monte Carlo simulation, Peru.

The study evaluated microbial and Potentially Toxic Elements-PTEs risks in high Andean river water in Peru using Monte Carlo simulation. A total of 144 water samples were collected from four rivers and evaluated for physicochemical parameters, PTEs and bacterial pathogens. The microbial risk analysis for exposure to pathogens present in the water was based on the probability of occurrence of diseases associated with Escherichia coli, Pseudomonas aeruginosa and enterococci.

Human risk associated with the ingestion of artichokes grown in soils irrigated with water contaminated by potentially toxic elements, Junin, Peru.

The contamination of water, air and soil with potentially toxic elements (PTE) compromises the supply of contaminant free food. Vegetables grown in contaminated soils can absorb and accumulate PTE at concentrations that are toxic to human health. In this context, the human risk associated with the intake of artichokes grown in soils irrigated with PTE contaminated water was assessed.

[Bacterial colonization after applying an educational program: A quasi-experimental study].

Introduction: Educational interventions can raise awareness and understanding in population groups and may help to achieve changes in behavior.

Objective: To determine if the educational handwashing program applied to high-school students reduces the colonization of infectious bacteria on the hands.

Methods: A non-randomized quasi-experimental study was carried out using consecutive sampling of the students of the last year of high-school who were divided into an intervention group and a control group.