ArticleZakstelskaja LJ, Yakhno MA, Isacenko VA, Molibog EV, Hlustov SA, Antonova IV, Klitsunova NV, Vorkunova GK, Burkrinskaja AG, Bykovsky AF, Hohlova GG, Ivanova VT, Zdanov VM.
Bull World Health Organ. 1978;56(6):919-22.
Early in November 1977, several outbreaks of influenza were reported in the far eastern region of the USSR. The epidemic spread rapidly throughout the country affecting mainly people under the age of 20 years. Most of the strains of virus isolated were found to be influenza A subtype H1N1. The serological characterization of the strains is described in this paper.