Studies on immunity in influenza. I. Long-term observation on virus activity and antibody status in a city population.
D000906:Antibodies; D006801:Humans; D007109:Immunity; D007136:Immunoglobulins; D007251:Influenza, Human; D009975:Orthomyxoviridae
D000906:Antibodies; D007136:Immunoglobulins
INFLUENZA VIRUSES