What Is Influenza?
4. How Does It Spread?
The flu is a contagious illness that spreads from person to person when they are less than six feet apart. It is believed to be spread through droplets that spread as people talk, cough or sneeze while infected. In some cases, the flu virus can spread by an infected individual touching a surface or object.
The most common period of infection is within three to four days after experiencing symptoms. Individuals who have just received the flu virus are highly contagious. Some adults can begin spreading the virus a full day before symptoms are present and up to a week after experiencing flu symptoms.
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