Flu Basics

A Doctor's View of the Flu

Dr. Rachel O’Mara, private physician, describes some of the experiences her patients have had with influenza.

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Dr. Rachel O'Mara, private physician

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Flu Science

How Flu Spreads

About 5% to 20% of the U.S. population gets the flu every year. The CDC estimates that there have been 9 to 41 million flu illnesses a year between 2010 and 2020.

While getting vaccinated is the most effective way of avoiding the flu, understanding how the flu spreads is a big step towards prevention.

Sep 6, 2022
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Flu Prevention

How Can You Prevent the Flu?

Read a few helpful tips to prevent seasonal influenza.

Sep 2, 2022
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Flu Complications

Why Does Flu Affect Some People More Than Others?

Certain people may have higher risk factors for influenza complications.

Sep 5, 2022
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Interactive Influenza Timeline

The History of Influenza

Deadly pandemics, health crises, scientific discoveries, vaccine innovations and disease prevention. Explore a historical timeline of major influenza events.

Flu Season Facts

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Flu Season

Flu Season May Last Longer Than You Think

Did you know? Seasonal Influenza is most active between December and February–but flu activity often begins to increase starting in October, and can last into May.