title: Epidemiological evaluation of the protection conferred by the Nivgrip vaccine against influenza caused by the A(H1N1) virus.
mesh_terms: D000914:Antibodies, Viral; D002648:Child; D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D009980:Influenza A virus / Q000276:immunology; D007252:Influenza Vaccines / Q000276:immunology; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D012383:Romania; D014611:Vaccination; D014613:Vaccines, Attenuated / Q000276:immunology
chemical_list: D000914:Antibodies, Viral; D007252:Influenza Vaccines; D014613:Vaccines, Attenuated