What Is H1N1 Flu?
H1N1 flu, sometimes called swine flu, is an infection caused by
a new kind of influenza virus that spreads from one person to another. In 2009, the U.S. Centers for Disease Control and Prevention reported an
outbreak of this new strain of flu in Mexico, the United States, and other
countries. The virus that causes this type of flu is the
H1N1 virus.
When you have H1N1 flu, you may feel tired and achy
and have a sore throat, a fever, and a cough. Most of the time, the illness is
not serious. But in some cases H1N1 flu can be severe and can lead to
, serious lung problems, and death.