After the pandemic.
D004196:Disease Outbreaks; D004345:Drug Industry; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000472:pathogenicity; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D011634:Public Health / Q000379:methods / Q000592:standards*; D011635:Public Health Administration / Q000592:standards*; D014944:World Health Organization / Q000458:organization & administration*
D007252:Influenza Vaccines