[Incidence of influenza in a large city 1978-1981].

Comparison of dissemination of influenza during three seasons, 1978-1981, in Moscow was done with parallel registration of the total incidence of influenza and ARD as well as the frequency of influenza A and B cases confirmed by immunofluorescent express diagnosis method. The weekly registration of the express diagnosis results was found to reflect quite accurately the periods of increased spread of influenza and to be a significant addition to the currently used analysis of the summary incidence increasing the accuracy of operative evaluation of the epidemic situation under conditions of large cities.