[Levels of antibodies against influenza viruses A, A1, B, C, and Shopeiowa 15 antibody titers in the population of Czechoslovakia].
D003604:Czechoslovakia; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D009975:Orthomyxoviridae
INFLUENZA/epidemiology
Hladiny protilátok proti vírusom chrípky A, A1, B, C, vírusu chrípky prasiec (Shopeiowa 15) u obyvatel'stva Ceskoslovenska.