Abstract:Wide serological prevalence of influenza A and B was verified by the serological survey covering 200 students of the University of S. Paulo during the 1984-1985 period. The humoral antibodies were detected by the single radial haemolysis technique, whose arithmetic titres averages were greater for both subtypes, (H1N1) and (H3N2) of the influenza A virus strains recently isolated from the population. However, the situation of this type B virus was not the same as that of type A seeing that the B/Engl/847/73, a… Show more
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