title: Influenza A(H1N1) 2009 virus: current situation and post-pandemic recommendations.
mesh_terms: D014943:Global Health; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology / Q000302:isolation & purification; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D032541:Mass Vaccination; D058873:Pandemics; D011159:Population Surveillance; D014944:World Health Organization
chemical_list: D007252:Influenza Vaccines