Pandemic H1N1 (2009) influenza.
D004196:Disease Outbreaks; D006297:Health Services Accessibility; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology / Q000628:therapy*; D017216:Telemedicine; D006113:United Kingdom / Q000453:epidemiology