Abstract
Influenza is an infectious disease causing annual epidemics. The disease affects all age groups of the population and its course is highly variable from mild to fatal.
Serious disease course can occur not only in chronically ill people and the elderly, but also in healthy children or adults. Vaccination is the most important method of preventing influenza and its complications.
Influenza vaccination is also important in preventing the occurrence of acute myocardial infarction or stroke, both in the chronically ill and in healthy people.