In the period of 1993 to 1994, influenza activity caused by circulatio
n of viruses antigenically structurally related to the strain A/Beijin
g/32/92 (H3N2) began in the countries of North America and West Europe
in October-November 1993, by spreading to the countries of East Europ
e, the Urals, and West Siberia. Epidemic events in China and in the Fa
r East were evoked mainly by the influenza B virus. The influenza A (H
1N1) viruses did not widely spread. Single isolates (about 1% of all t
he influenza A virus isolates, as evidenced by the CDC, Atlanta, USA)
of this subtype were etiological agents of sporadic morbidity. A fourt
een-year period (1977-1991) of the epidemic activity of the influenza
A (H1N1) virus seems to be over. The last epidemic of the influenza A
(H3N2) virus has a moderate intensity. Among all the age-group populat
ions, children were largely afflicted. The highest incidence in Russia
was recorded in Arkhangelsk, Barnaul, Nizhny Novgorod, Omsk, Samara,
and Smolensk where approximately 16-18% of children under 14 years of
age and 3.5-5% of the population of 15 years or more fell ill. The hig
hest incidence was recorded in Minsk and Vilnus too.