 Lancaster General Health would like you to stay informed about the latest developments about the seasonal and H1N1 influenzas. This flu season is different because of the presence of both seasonal flu and the H1N1 flu.
The flu is a contagious respiratory illness caused by influenza viruses and can cause mild to severe illness, and sometimes death. The 2009 H1N1 flu virus is a new virus strain that is different from the seasonal flu virus and requires a separate vaccination.
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