Influenza immunization 2008 - ARCHIVED

The influenza vaccine provides protection against viruses that cause the flu, a highly contagious respiratory infection. Individuals who have been immunized may contract the flu, but the illness will be milder. Health Canada recommends getting a flu shot every year. Because the many strains of influenza change over time, each year a new vaccine is produced to target the three most common strains predicted for the coming season.