According to Dr. Michael Greger, Director of Public Health and Animal Agriculture for the Humane Society of the United States, the way animals are farmed in factory farms suppresses their immune system and gave rise to swine flu (now known as H1N1). American Public Health Association has called for an end of factory farming: www.jhsph.edu/. . . /farm_moratorium.html  

• According to the Pew Commission, factory farms pose unacceptable risks to the environment, animal welfare and public health: www.ncifap.org
• Watch Dr Greger at www.youtube.com/. . . v=S5rd2
• Read a New Scientist article at www.newscientist.com/. . . swine-flu-the-predictable-pandemic.html
• View a PETA factsheet at www.peta.org/mc/factsheet_display.asp?ID=119
• Read an article from Wired magazine at www.wired.com/wiredscience/2009/05/swineflufarm