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

Bird Flu Strain H9N2: A Potential Threat to Humans

A recent study suggests that the H9N2 bird flu strain, often considered minor, has adapted to human cells, raising concerns about its potential to spark a human pandemic.

Although cases of person-to-person transmission have not been reported yet, scientists are worried about the spread of this and other bird viruses, with Avian influenza virus H5N1 being a primary focus in recent years.

The researchers say more surveillance of the virus is needed.

The study's findings emphasize the importance of monitoring the H9N2 virus to prevent a potential outbreak.

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

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Nature Nature — 2025-10-27