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Haemagglutination-inhibiting (HI) antibodies against four prototype strains of influenza A virus in different age groups

Published online by Cambridge University Press:  15 May 2009

A. L. Terzin ,
S. Djurišić ,
B. Vuković  and
V. Vujkov
A. L. Terzin
Affiliation:
Medical Faculty, Novi Sad, Yugoslavia
S. Djurišić
Affiliation:
Medical Faculty, Novi Sad, Yugoslavia
B. Vuković
Affiliation:
Medical Faculty, Novi Sad, Yugoslavia
V. Vujkov
Affiliation:
Medical Faculty, Novi Sad, Yugoslavia
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Summary

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Sera of 197 apparently well persons were tested for residual haemagglutination-inhibiting antibodies against live Hong Kong/68, A/FM/47 and A/PR/34 strains. Sera of 62 well persons, regularly exposed to contacts with swine, were tested against an inactivated A/New Jersey/76 antigen.

Those born some time before and during a certain influenza era showed a significantly greater proportion of homologous residual titres against the subtype prevailing in that influenza era, than those born after the termination of the same era.

In each of the seven age groups tested both the percentage of positives and the geometric mean titres were usually highest against the Hong Kong strain (representing the most recent era); the next highest were those against the FM1 strain and the lowest were those against the PR8 strain (representing the most distant of these three influenza eras).

The serological involvement of donors exposed to regular contacts with swine was relatively stronger against the New Jersey antigen than the response of other serum donors shown against the other three, more recent, prototypes of influenza virus A. The oldest age groups showed significantly lower antibody response against the PR8, FM1 and Hong Kong strains (but not against the New Jersey antigen) than the next one or two of the younger age groups.

Type
Research Article
Information
Journal of Hygiene , Volume 82 , Issue 2 , April 1979 , pp. 225 - 230
Copyright
Copyright © Cambridge University Press 1979

References

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