Laboratory-based surveillance of influenza A(H1N1) and A(H3N2) viruses in 1980-81: antigenic and genomic analyses.

Abstract

During 1981, the A/Brazil/11/78-like strains of influenza virus that had been prevalent from 1978 to 1980 were displaced by a new set of heterogeneous, but closely related, variants (reference strain, A/England/333/80). Genomic analysis revealed that these new variants were almost exclusively nonrecombinant H1N1 viruses, i.e., they contained no genes of… (More)

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@article{Cox1983LaboratorybasedSO, title={Laboratory-based surveillance of influenza A(H1N1) and A(H3N2) viruses in 1980-81: antigenic and genomic analyses.}, author={N. J. M. Cox and Zheng-Jian Bai and Alan P. Kendal}, journal={Bulletin of the World Health Organization}, year={1983}, volume={61 1}, pages={143-52} }