Influenza is a contagious viral disease that causes coughing and high fever. Most people get better within one to two weeks. However, if you are elderly or have certain chronic illnesses, you may become seriously ill and your chronic illness may deteriorate.
The best protection against influenza is to get vaccinated. The vaccine protects against four different types of influenza. You can get influenza even if you are vaccinated, but the vaccine means you do not get as sick as you otherwise would.
The influenza vaccination is free for those who belong to one of the risk groups. You can get vaccinated at your health centre.