[Influenza: an old problem from a new perspective].
Snacken
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Département Epidémiologie-Toxicologie, Institut Scientifique de Santé Publique.
D000818:Animals; D001717:Birds; D006801:Humans; D005585:Influenza in Birds / Q000453:epidemiology* / Q000517:prevention & control; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control