EFFECT OF MUTATIONS IN HEMAGGLUTININ AND NEUROMINIDASE ON THE PROPERTIES OF SEASONAL INFLUENZA VIRUSES. - ZADOROZHNA, V. I.; LIULCHUK, M. G.; SHAHINIAN, V. R.; SERHEIEVA, T. A.; VYNNYK, N. P.; VYNOGRAD, N. O.; MARYCHEV, I. L. (Microbiological Journal / Mikrobiolohichnyi Zhurnal, 2026)