Four agricultural workers in Washington state have tested positive for bird flu, in the first human cases of H5N1 virus to be reported in the state. The four were "working with infected poultry at a commercial egg farm in Franklin County,

Bird flu has possibly infected four agricultural workers in Washington state, according to the Washington State Department of Health. In a press release Sunday, the Washington State Department of

Slovakia has reported an outbreak of avian influenza on a poultry farm, the World Organisation for Animal Health (WOAH) said on Tuesday, as Europe faces a seasonal upturn in the deadly disease commonly known as bird flu.