H1N1 Fast Facts

In 2009, the H1N1 influenza virus swept across the globe causing a global pandemic and infecting more than 18,000 people.

(CNN)Here's a look at the H1N1 influenza virus, also known as swine flu. There was a pandemic outbreak across the globe which lasted from 2009 to 2010.

Human cases of H1N1 from April 2009-April 2010

Fatalities in the United States - Estimated total is 12,469.
    Fatalities Worldwide - A 2012 study estimated a range between 151,700 and 575,400 deaths.

      Swine Flu

      Swine flu is a respiratory disease caused by type A influenza virus in pigs. Swine flu outbreaks are common in pig herds, but generally the disease causes few deaths in pigs.