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As bird flu hits cattle herds in U.S., scientists say these H5N1 factors worry them most
Bird flu infections have been rare among people, but the pathogen is evolving, which has scientists worried about a possible ...
Bird flu, feared as a possible pandemic, poses growing risk to people as pathogen spreads, scientists warn
More than 100 federal scientists who track bird flu, including vaccine and food safety experts, have been laid off. This comes as the deadly pathogen rips through dairy herds and poultry flocks.