Influenza surveillance. Serological trends in military recruits, 1978-1979.
D000293:Adolescent; D000328:Adult; D000914:Antibodies, Viral / Q000032:analysis; D001530:Belgium; D006801:Humans; D009980:Influenza A virus / Q000276:immunology; D007251:Influenza, Human / Q000453:epidemiology* / Q000276:immunology; D008297:Male; D008887:Military Medicine
D000914:Antibodies, Viral