This ‘minor’ bird flu strain has potential to spark human pandemic

Potential Human Pandemic from H9N2 Bird Flu Strain

A 'minor' bird flu strain, H9N2, has shown potential to spark a human pandemic, as experiments suggest it has adapted to human cells.

Although cases of person-to-person transmission have not been reported yet, scientists are concerned about the spread of this and other bird viruses, with a focus previously on avian influenza virus H5N1.

The researchers say more surveillance of the virus is needed.

The H9N2 virus has often been overlooked due to its minor effects on birds, but its adaptation to human cells raises concerns about a potential human pandemic.

Author's summary: H9N2 bird flu strain may cause human pandemic.

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Nature Nature — 2025-10-27

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