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Influenza is scientists' top pick for humanity's next killer plague. Up to 60 million Americans come down with the flu every year. The next pandemic virus may be manufactured in the filthy conditions common in factory farms, where chickens are packed together by the tens or hundreds of thousands in utter filth, allowing viruses to spread rapidly from bird to bird and mutate into very dangerous strains.



A Virus of Our Own Hatching

The HSUS's Dr. Michael Greger literally wrote the book on this virus. As Virology Journal said, "Greger’s superb story-telling ability makes every page of the book interesting and fascinating for both specialist and layperson."

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News & Events

  • April 23, 2015

    HSUS Statement on Outbreak of Bird Flu at Baer Poultry Co. in Minnesota

    The Humane Society of the United States is very concerned about the welfare of the millions of chickens being slaughtered on egg and turkey farms across the country because of the avian flu outbreak.

  • September 26, 2012

    "The Looming Zoonotic Danger"

    Recent decades have seen an unprecedented rise in infectious diseases, 75 percent of which come from animals. Zoonotic diseases cause 2.5 billion cases of human illness each year and 2.7 million human deaths worldwide. Most of these illnesses and deaths are caused by diseases spread from farm animals.

  • September 6, 2011

    Global Pandemic the Subject of New Thriller "Contagion"

    In the film “Contagion,” opening in theaters September 9, a global pandemic is born when humans come into contact with an infected, slaughtered pig. Michael Greger, M.D., HSUS director of public health and animal agriculture, says there’s as much potential fact as fiction in the scenario, but his focus is on how, and where, such a virus is likely to be born.

  • October 26, 2009

    Article Points to Human and Animal Welfare Costs of Long-Distance Farm Animal Transport

    A chapter in the upcoming book Handbook of Disease Outbreaks: Prevention, Detection and Control implicates the long-distance transport of farm animals in the spread of human and animal diseases. Dr. Michael Greger, director of public health and animal agriculture for The HSUS, co-authored the chapter.

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