[Assessment of drinking water quality in Avellino (Italy) by multivariate analysis].

The aim of this study was to assess the quality of the drinking water supply in the district of Avellino (Italy), by evaluating physico-chemical parameters and presence of contaminants. A multivariate approach was used to analyse data and to evaluate compliance to norms and standards. Study results indicate that statistical modeling is a powerful descriptive method to identify qualitative temporal trends in water quality and, if repeated in time, allows an evaluation of representativeness of the sampling points.

Cost-benefit evaluation of a preventive intervention on the biological risk in health: the accidental puncture during the administration of insulin in the University Hospital "Federico II" of Naples.

Background: The occupational exposure to biological risk is a frequent event that affects millions of workers in the health sector. Operators are exposed to accidental contact with blood and other potentially infectious biological materials with a frequency higher than that observed in the population (occupational exposure). The pathogens most frequently implicated are the human immunodeficiency virus (HIV), hepatitis C (HCV) and hepatitis B (HBV) viruses.