Leaky Vaccines Enhance Spread of Deadlier Chicken Viruses – Phenomena: Not Exactly Rocket Science
Over the past fifty years, Marek’s disease—an illness of fowl—has become fouler. Marek’s is caused by a highly contagious virus, related to those that cause herpes in humans. It spreads through the…
Sourced through Scoop.it from: phenomena.nationalgeographic.com
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