Inside a flu virus

What are the targets for flu vaccines?

CBC News Last Updated: January 17, 2014

Influenza viruses are constantly changing, leaving vaccine manufacturers in catch-up mode every year. Seasonal flu vaccines target areas of the flu virus that change.

In contrast, the search for a better, long-lasting flu shot takes aim at what flu viruses share in common. Here are some components of a flu virus.


Sources: U.S. Centers for Disease Control and Prevention, University of California, Berkeley

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