How does influenza cause pneumonia? | CNA Explains

Is influenza, also known as the flu, seasonal? How could it lead to pneumonia? Do vaccinations help? Here's what you need to know about the flu and pneumonia as well as how you can protect yourself from them.

0:00 Flu/influenza symptoms
0:34 Is influenza seasonal?
0:58 Who's at risk?
1:52 When things go south
3:22 Other complications besides pneumonia
4:24 Is it time to get a flu shot?
5:44 Travel and vaccination
6:11 Is a flu vaccination enough?

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