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Breaking down what caused the first severe bird flu case in U.S.
A person in Louisiana has contracted the nation's first severe case of bird flu after the virus mutated inside their body, allowing it to more easily infect their upper respiratory system. Dr. Celine Gounder explains.
A person in Louisiana has contracted the nation's first severe case of bird flu after the virus mutated inside their body, allowing it to more easily infect their upper respiratory system. Dr. Celine Gounder explains.
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