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

  2. CDC Reports Potentially Troublesome Mutations in Bird Flu

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

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

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

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

  10. CDC Reports Potentially Troublesome Mutations in Bird Flu

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