title: What is H1N1?
mesh_terms: D003140:Communicable Disease Control / Q000379:methods*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000175:diagnosis / Q000628:therapy / Q000821:virology; D016272:Occupational Health; D009785:Occupational Health Nursing