The World Health Organization signaled a global pandemic on June 11, 2009 due to the rapid spread of the new H1N1 virus. On that day 70 countries have reported cases of novel influenza A and it continues to spread. The H1N1 virus is of swine origin that first started in Mexico. The virus spreads through the respiratory system of humans that are infected. It causes flu-like symptoms that include nausea, chills, and a fever. The first H1N1 patient in the U.S. was tested in a lab at CDC on April 15, 2009. By June 19, 2009 all 50 states reported cases of H1N1 infection. It seems that overall influenza activity is decreasing but H1N1 is still spreading with fervor. The CDC is overseeing the situation and trying to stop the severity of the outbreak.
http://www3.niaid.nih.gov/topics/Flu/H1N1/background.htm
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