Diffusion of influenza viruses in Italy in years 1982-83-84. Laboratory investigations at the National Influenza Centre of WHO.
D000367:Age Factors; D000914:Antibodies, Viral / Q000032:analysis; D006801:Humans; D007251:Influenza, Human / Q000382:microbiology*; D007558:Italy; D009975:Orthomyxoviridae / Q000145:classification*; D011159:Population Surveillance; D012703:Serotyping
D000914:Antibodies, Viral