- Virus in Louisiana bird flu patient shows mutations that could increase transmissibility to humans, CDC analysis finds CNN
- Bird flu virus shows mutations in first severe human case in US, CDC says Reuters
- Genetic mutations in H5N1 bird flu raise transmission concerns KCCI Des Moines
- Genetic Sequences of Highly Pathogenic Avian Influenza A(H5N1) Viruses Identified in a Person in Louisiana CDC
- Bird flu virus shows mutations in first severe human infection in US, CDC says The Guardian