[The organisation of prevention among Ravenna's seaport.].

The port work presents specific risk factors in relation to the types of production which take place in it, and to the specific organisation it is managed by. The port of Ravenna is a big commercial one and it has a canal-port structure. Objectives.

[Mortality study update of workers exposed to vinyl chloride in plants located in Ferrara and Ravenna (Emilia-Romagna Region, Northern Italy)].

Objectives: to update the mortality study of subjects exposed to vinyl chloride in the phases of synthesis of the monomer and polymerization in the plants of Ferrara and Ravenna (Emilia-Romagna Region, Northern Italy).

Design: both for the whole cohort and for the two plants, standardized mortality ratios (SMRs), with 95% confidence intervals (95%CI), were calculated for different death causes, then stratified by duration and latency, periods of the beginning of work and cumulative exposure (ppm-years).

Setting And Participants: the cohort includes 1,540 subjects (469 in Ferrara hired from 1953 to 1999; 1,071 in Ravenna hired from 1959 to 2000), with at least six months of work.