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(4) The infection with certain strains of influenza viruses of avian origin may trigger outbreaks in domestic birds of epizootic proportions, causing mortality and disturbances of poultry on a scale, which can threaten in particular the profitability of poultry farming as a whole.

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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.