Google Flu Trends provides up-to-date flu activity

Google Flu Trends provides up-to-date estimates of flu activity in the United States and Mexico based on aggregated search queries. Data can be viewed on the Flu Trends website or downloaded as a CSV file for analysis.

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.