Scientific and methodological aspects of labpratory support aimed at providing chemical safety during internaitonal mass events

International legal acts that regulate organizing and carrying out various mass events in our country impose an obligation on the RF to provide safety, including sanitary-epidemiologic ones, for their guests and participants. Tight schedules and short time span are peculiarities related to such events and, when it comes to hygienic aspects, it determines short-term exposure of guests and participants to environmental factors. Nowadays in Russia substantial experience has been accumulated in providing hygienic safety for population during international mass events. Our research goal was to determine priority tasks in laboratory and information-analytical support for Rospotrebnadzor activities aimed at solving issues related hygienic safety of international mass events at various stages in preparation to them and during them depending on their scale and social significance. This paper focuses on determining a necessity to work out a model for laboratory support aimed at providing chemical safety during international mass events as regards assessing health risks for participants and guests attending such events; the model is to involve implementing laboratory control over biological markers. The authors determine basic principles of the state policy in the sphere of providing hygienic safety, reasons for threats and health risks occurrence during international mass events. The present research allowed to reveal it was advisory to implement a system for biological control over markers related to impacts exerted by various chemicals on personnel involved into preparation and organization of international mass events.