The long war against flu.
D000818:Animals; D001717:Birds / Q000821:virology; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype / Q000276:immunology / Q000502:physiology; D007252:Influenza Vaccines / Q000600:supply & distribution*; D005585:Influenza in Birds / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission / Q000821:virology; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission / Q000821:virology*
D007252:Influenza Vaccines