H1N1 ("swine flu")
During the 2009 flu season, H1N1 ("swine flu") was an influenza virus that spread worldwide among people. In the 2010-11 flu season, health experts expect H1N1 flu virus to spread and cause illness along with other seasonal flu viruses.For updated information about the flu, including the H1N1 flu virus, please visit our Influenza website at www.kingcounty.gov/health/flu.
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