摘要：Altogether 13 strains of virus were isolated during the 1974 influenza epidemic in Nigeria. These A/Nigeria/1/74 strains were shown by haemagglutination-inhibition tests to be closely related to the A/Port Chalmers/1/73 virus. Antibody to the epidemic strains developed rapidly in the population and 80-95% of all age groups tested possessed high antibody levels; of 145 paired sera tested, 133 (92%) showed sero-conversion to A/Nigeria/1/74 virus. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (321K), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 103 104 105
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