Influenza symptoms are treated with anti-inflammatory and antipyretic drugs. The most widely used are those containing acetylsalicylic acid, or aspirin. To ease some of the symptoms, sedatives and expectorants may alleviate coughing.
Note: Concerns about Reye?s Syndrome, a rare but severe illness, are primarily related to use for viral infections in children and teenagers. In these groups, aspirin should not be used to treat flu-related pain and fever.
Influenza is a respiratory illness characterized by, a viral inflammation of the respiratory membranes. Viruses causing influenza are numerous and are transmitted in two ways:
Influenza viruses constantly evolve and are different from year to year. This makes immunity nearly impossible and is likely the reason why there are new influenza epidemics each year.