title: Epidemiological investigations in young children's communities concerning the efficiency of prophylactic immunization with inactivated influenza vaccine (I.C. 80) in a preepidemic season.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis; D000956:Antigens, Viral / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology / Q000517:prevention & control*; D005334:Fever / Q000209:etiology; D006801:Humans; D007114:Immunization; D007223:Infant; D009980:Influenza A virus / Q000276:immunology; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000009:adverse effects; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D012383:Romania; D013997:Time Factors; D014613:Vaccines, Attenuated / Q000008:administration & dosage* / Q000009:adverse effects
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D007252:Influenza Vaccines; D014613:Vaccines, Attenuated