evidence: The first-ever reported bird flu case infecting a human occurred in 2022 following exposure to infected poultry, the CDC said. A second case was reported this year in Texas following exposure to infected dairy cattle. [...] Bird flu has been spreading to dairy cows in US [...] The larger concern is that the virus might evolve to become easily transmitted to people. Bird flu is considered more dangerous than the annual flu because it's a strain humans have never encountered and it's likely to be highly contagious.