A top scientist at the World Health Organization gave a dire warning about the dangers presented by the spread of bird flu to new species, noting that humans face an “extraordinarily high” mortality rate if infected, according to a report. “This remains, I think, an enormous concern,” the UN health agency’s chief scientist Jeremy Farrar told reporters Thursday in Geneva, ScienceAlert reported. WHO reported last week that of the 888 human cases of bird flu, H5N1, globally between January 2023 and March 2024, 52% of them were fatal. The strain has become “a global zoonotic animal pandemic,” Farr…