Anyone who has been exposed to the virus is at risk. You're exposed to the flu when someone who's infected with the influenza virus coughs or sneezes, or you touch something they've handled. That's why the flu spreads quickly anywhere people gather — schools, child-care centers, offices, nursing homes, buses, conferences and cruises.

To learn more:

Influenza: What Increases Your Risk?
(WebMDHealth)

Find out who is at risk and why. Information is easy to understand and written by health professionals.

http://www.webmd.com/cold-and-flu/tc/influenza-what-increases-your-risk

next » How can you prevent influenza?

Last Modified: Tuesday April 29, 2008 3:32 PM