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

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

  3. Bird Flu Samples From Very Ill Patient Had ‘Concerning’ Mutations

  4. H5N1 virus in Louisiana bird flu patient shows mutations that …

  5. Bird flu mutations show potential for easier human spread ... - NBC News

  6. Genetic Sequences of Highly Pathogenic Avian Influenza A(H5N1) …

  7. Bird flu: Virus in Louisiana patient shows mutations that could ...

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

  9. U.S. reports first severe human case of bird flu - NBC News

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

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