Genetic Diversity and Biological Characteristics of H3 Avian Influenza Virus Isolated from China in 2021–2022 Showed the Emerging H3N8 Posed a Threat to Human Health

<div>Phylogenetic trees of the NA gene of H3 influenza viruses detected in 2021–2022. The phylogenetic trees of N8 (a) and N2 (b) were rooted with A/equine/Johannesburg/1/1986(H3N8) and A/duck/Alberta/78/197(H3N2), respectively. The H3N8 viruses that infect humans are shown in bold black. The trees were constructed with the MEGA 6.05 software using the neighbor-joining method. Bootstrap analysis was performed with 1,000 replicates.</div>

Transboundary and Emerging Diseases

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Figure 2: Genetic Diversity and Biological Characteristics of H3 Avian Influenza Virus Isolated from China in 2021–2022 Showed the Emerging H3N8 Posed a Threat to Human Health 

Figure 2 | Genetic Diversity and Biological Characteristics of H3 Avian Influenza Virus Isolated from China in 2021–2022 Showed the Emerging H3N8 Posed a Threat to Human Health 