Laboratory investigation of a closed epidemic of Hong Kong influenza.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000906:Antibodies / Q000032:analysis; D044383:Black People; D004196:Disease Outbreaks; D006386:Hemagglutination Tests; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000276:immunology / Q000382:microbiology*; D008297:Male; D008875:Middle Aged; D009975:Orthomyxoviridae / Q000145:classification / Q000302:isolation & purification; D013019:South Africa
D000906:Antibodies