Every year, between 330 million and over 1.5 billion people worldwide fall ill with infections caused by influenza viruses. For most of them, despite acute symptoms, including high fever, the disease ends after about 7 days without major consequences. However, according to the World Health Organization, influenza viruses cause between 500 thousand and one million deaths worldwide every year. They also cause serious complications, such as: pneumonia and bronchitis, otitis media, or inflammation of the heart muscle and pericardium.

Doctors emphasize that vaccination is the most effective way to prevent infections and complications caused by influenza viruses.

In Poland, several hundred thousand to several million cases of flu are registered each year. There is still time to avoid it this time. According to specialists, vaccination against flu should be done every year, preferably at the turn of September and October. The time needed to develop immunity does not exceed 3 weeks. Flu most often attacks in winter - the peak incidence is recorded from January to March.

More information at http://szczepienia.pzh.gov.pl.