Explore flu trends across the U.S.

We've found that certain search terms are good indicators of flu activity. Google Flu Trends uses aggregated Google search data to estimate flu activity in your state up to two weeks faster than traditional systems. Read more »

United States flu activity:  Low
 2008-2009   Past years
 Minimal  Low  Moderate  High  Intense
Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May

Data current through: November 11, 2008

What is the flu?

Influenza (the flu) is a serious contagious respiratory illness caused by influenza viruses. Millions of people in the United States get the flu each year. Most people are sick for about a week. Some people (especially young children, pregnant women, older people, and people with chronic health problems) can get very sick and may die from the flu.

Flu shot locator

ZIP code:
Source: American Lung Association

Flu in the news