O. Olіynyk, І. Kіrda, I. Voitsekhivska  Danylo Halytsky Lviv National Medical University Introduction. Influenza – an acute infectious disease of viral origin with a short incubation period, sudden onset and cyclical course that is characterized by severe toxicity and defeat of the upper respiratory tract and lungs. During the epidemic from 5.0 to 20.0 % Read More …