title: [Study of the effectiveness of an inactivated influenza vaccine in intra-nasal administration].
mesh_terms: D000293:Adolescent; D000328:Adult; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D012383:Romania; D014611:Vaccination
chemical_list: D007252:Influenza Vaccines
vernacular_title: Studiul eficienţei unui vaccin gripal inactivat administrat pe cale intranazală.