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

Bird Flu Strain H9N2: A Potential Threat to Humans

A team of scientists has raised concerns about the H9N2 bird flu virus, which has been largely overlooked due to its minor effects on birds.

Experiments suggest that H9N2 has adapted to human cells, but person-to-person transmission has not been reported yet.

The researchers say more surveillance of the virus is needed.

The focus has been on the H5N1 avian influenza virus in recent years, but scientists are now warning about the spread of other bird viruses, including H9N2.

The authors recommend increased monitoring of the H9N2 virus to prevent a potential human pandemic.

Author's summary: H9N2 bird flu poses pandemic risk.

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Nature Nature — 2025-10-27

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