ABSTRACT
Biological risk agents are micro-and macro-organisms and the structures and substances they produce; they exert a harmful inuence upon human organisms and lead to occupational diseases in the work environment (Dutkiewicz et al. 1988; Dutkiewicz et al. 2002; Dutkiewicz 2006). This comprehensive denition has been approved by experts in this eld and encompasses not only infectious agents, but also allergens, biological toxins, and external parasites.
