• Influenza 1 & 2
Influenza, known as the flu, is a respiratory infection caused by a virus. The flu virus usually spreads from person to person through coughing or sneezing. You can also get the flu by touching a surface that has the flu virus on it, and then touching your own nose or eyes.
The flu is most common during certain times of the year, known as flu season. In the United States, flu season can begin as early as October and end as late as May. During each flu season, millions of Americans get the flu. Most people who get the flu will feel sick with muscle aches, fever, and other uncomfortable symptoms, but will recover within a week or so. For others, the flu can cause very serious illness, and even death.