Humans are responsible for swine flu

Swine flu. Bird flu. Mad cow disease. SARS. These diseases have all spread from animals to humans in one form or another. But animals aren't to blame for outbreaks of animal-borne diseases -- humans are.

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<p><a href="http://www.physorg.com/news160386820.html">Humans are responsible for swine flu</a></p> <p> Swine flu. Bird flu. Mad cow disease. SARS. These diseases have all spread from animals to humans in one form or another. But animals aren't to blame for outbreaks of animal-borne diseases -- humans are.</p>