Yesterday, August 10, 2010, the World Health Organization (WHO) declared the H1N1 swine flu pandemic officially over, a little more than a year after it began. This does not mean that the virus that caused the pandemic has disappeared, simply that it has now spread so widely that many people in all age groups have some immunity to the strain. Experts expect that the H1N1 virus will continue to circulate at relatively low levels, in much the same way as a seasonal influenza strain.
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