Pandemic influenza--(some) reasons to be cheerful?
D019049:Developed Countries; D003906:Developing Countries; D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007252:Influenza Vaccines / Q000600:supply & distribution*; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D014944:World Health Organization
D007252:Influenza Vaccines