Author, Donkey, Bureaucrats, Administrators
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{{unfinished}}
{{unfinished}}
===Subtypes===
===Subtypes===
**An eradication policy prevents it
**An eradication policy prevents it
**Vaccination favors the evolution of the virus, which might increase its virulence and drift
**Vaccination favors the evolution of the virus, which might increase its virulence and drift
[[Category:Orthomyxoviridae]][[Category:Poultry]]