title: Single-dose monovalent A 2 -Hong Kong influenza vaccine. Efficacy 14 months after immunization.
mesh_terms: D000041:Absenteeism; D000293:Adolescent; D000906:Antibodies / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D003168:Complement Fixation Tests; D004812:Epidemiologic Methods; D005069:Evaluation Studies as Topic; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage; D007251:Influenza, Human / Q000453:epidemiology / Q000276:immunology / Q000517:prevention & control*; D007279:Injections, Subcutaneous; D013997:Time Factors; D014611:Vaccination; D014861:Washington
chemical_list: D000906:Antibodies; D007252:Influenza Vaccines