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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. Genetic Sequences of Highly Pathogenic Avian Influenza

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

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

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

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

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

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

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

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