An Occupational Disease (OD) is a disease contracted as a result of an exposure to risk factors arising from work. Recognition of the occupational origin of a disease, at the individual level, requires the establishment of a causal relationship between the disease and the exposure of the worker to certain hazardous agents at the workplace. This relationship is normally established on the basis of clinical and pathological data, occupational history (anamnesis) and job analysis, identification and evaluation of the occupational hazards as well as exposure verification. When a disease is clinically diagnosed and a causal link is established, the disease is then recognized as occupational. |
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ODs differ from occupational accidents insofar as the effects of an occupational accident on health are related to a sudden event that took place at a particular moment, whereas an OD is generally related to a repeated exposure and very rarely to a sudden event.
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