title: [Epidemiologic study on the 1969-1970 influenza outbreak and the antigenic capacity of anti-influenza vaccine. I. Methodology of the epidemiological studies].
mesh_terms: D000906:Antibodies / Q000032:analysis*; D004196:Disease Outbreaks; D006801:Humans; D007252:Influenza Vaccines / Q000592:standards*; D007251:Influenza, Human / Q000517:prevention & control*; D008800:Mexico; D012494:Sampling Studies
chemical_list: D000906:Antibodies; D007252:Influenza Vaccines
vernacular_title: Investigación epidemiológica sobre el brote de influenza 1969-1970 y el poder antigenico de la vacuna antiinfluenza. I. Metodología de las investigaciones epidemiológicas.