Two more bird flu cases reported in Colorado, but elsewhere a study finds no asymptomatic infections
The IndependentFor free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy U.S. health officials on Friday announced two more bird flu cases among farmworkers, but they also said a new study in Michigan suggested the virus is not causing silent infections in people. It's the largest outbreak of human bird flu infections in U.S. history, and accounts for most of the 11 cases reported to date. A bird flu virus has been spreading since 2020 among mammals — including dogs, cats, skunks, bears and even seals and porpoises — in scores of countries.