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  1. CDC Confirms First Severe Case of H5N1 Bird Flu in the United …

  2. Bird flu virus likely mutated within a Louisiana patient, CDC says

  3. CDC Reports Potentially Troublesome Mutations in Bird Flu

  4. Genetic Sequences of Highly Pathogenic Avian Influenza

  5. CDC Reports Concerning Mutation in Bird Flu Found in Louisiana

  6. America’s first severe case of bird flu confirmed in Louisiana

  7. CDC confirms 1st case of severe bird flu in US - ABC News

  8. First severe human case of bird flu in US: 'Concerning' mutation'

  9. CDC confirms first severe bird flu case in the U.S. - CBS News

  10. Bird flu virus likely mutated within Louisiana patient who became …

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