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Various methods for evaluation of virulence properties of causative agents of infectious diseases in vitro were analyzed: molecular-genetic, cultural-biochemical, immunologic, physiologic. Predominant use of molecular-genetic methods, expediency of a complex approach, relevance of search of novel informative parameters of virulence are noted. Study of biological properties of pathogens in vitro is the first screening stage of evaluation of their virulence.

Choosing the professionally important qualities (PIQ) is an essential moment of personnel selection and assessment of reliability of their professional activity. The use of methods of analytical job specification and expert estimations allowed to define the list of PIQs of personnel admitted to work with PBA of I-II groups.