Wild birds, poultry, cattle and even farmworkers in the United States have already caught the virus, urging scientists to work on vaccinations to protect human health
A rapidly evolving strain of H5N1 bird flu is prompting urgent warnings as existing vaccines struggle to keep pace. The virus, already detected in wild birds, poultry, cattle, and farmworkers, is weakening antibody effectiveness. Scientists warn that mutations may soon enable human-to-human transmission, raising pandemic concerns. Computational modeling reveals the virus's rapid evasion of immune defenses.
