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Read articles, including Science News stories written for ages 9-14, on the SNK website.
MAKING THE JUMP

Bird flu can become infectious in people via different routes. Changes in the flu’s genetic instruction book can render the virus able to attack humans, or the bird version can mix parts with a human virus in another creature, such as a pig, to form a reassorted virus. Credit: Chicken and pig icons: MikiR/Shutterstock; human icon: Matthew Cole/Shutterstock; virus icons: T. Dubé

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