Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Apr 30, 2009
Swine flu virus spreads across the globe. Experts have long warned that today's factory farming conditions have already created the environment for such disease to occur anytime. Dr. Ellen Silbergeld professor of Environmental Health Sciences at Johns Hopkins Bloomberg School of Public Health, stated "These mixing bowls of intensive operations of chickens and pigs are contributing to speeding up viral evolution"