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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 Potentially Troublesome Mutations in Bird Flu

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

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

  8. America’s first bird flu death reported in Louisiana | CNN

  9. U.S. records its first human bird flu death - NBC News

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

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