Oxford JS, Haaheim LR, Slepushkin A, Werner J, Kuwert E, Schild GC. Strain specificity of serum antibody to the haemagglutinin of influenza A (H3N2) viruses in children following immunization or natural infection.
J Hyg (Lond) 1981;
86:17-26. [PMID:
7462596 PMCID:
PMC2134063 DOI:
10.1017/s0022172400068704]
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Abstract
The specificity of serum anti-HA antibody from children immunized or infected with A/Victoria/75 (H3N2 or A/Texas/77 (H3N2) virus was examined using the single radial haemolysis test together with adsorption of antibody with three antigenic variants A/Hong Kong/68 (H3N2), A/Port Chalmers/73 (H3N2) and A/Victoria/75 (H3N2). The majority of young children reacted to vaccination or infection by producing strain-specific (SS) antibody to the homologous virus. A small proportion of children's sera contained cross-reacting (CR) antibodies capable of reacting with the haemagglutinins of all antigenic variants of the sub-type including A/HK/1/68. In contrast, most adults reacted immunologically to either vaccination or infection by producing CR antibody, reacting with all variants of the antigenic subtype including the prototype virus A/HK/1/68 (H3N2).
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