The virus has now been detected on six continents, including areas like Antarctica that had never reported bird flu before It's mutating fast (Image: Getty Images)

New concerns are emerging over the deadly H5N1 bird flu, which scientists say is mutating faster than ever and entering an unpredictable new phase.

A global analysis uploaded to preprint biology server bioRxiV on November 24 by influenza specialists working with the World Health Organization, the World Organisation for Animal Health and the UN’s Food and Agriculture Organization warns that the virus’ rapid evolution and increasing ability to infect mammals could significantly raise future risks to humans.

According to the H5 Evolution Working Group, which reviewed more than 18,000 samples collected between 2015 an

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