rec_3
Council Directive 2005/94/EC of 20 December 2005 on Community measures for the control of avian influenza and repealing Directive 92/40/EEC · European Union
(3) Influenza viruses include a large number of different virus strains. The level of risks posed by the different strains of influenza viruses for animal and public health is very variable and to some extent unpredictable, due to rapid virus mutation and possible re-assortment of the genetic material between different strains.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.