All of the state's cases have been linked to contact with infected dairy cows, officials said. No human-to-human transmission has been documented.
Officials in Washington are investigating the state’s first-ever presumed human cases of avian influenza after four ...
Bird flu is presumed to have infected four poultry workers in Washington state, making it the sixth U.S. state to identify ...
Four agricultural workers in southeast Washington have preliminarily tested positive for bird flu after working around an ...
Washington state health officials said four agricultural workers tested presumptively positive for avian influenza, marking ...
The worker are the first presumed human cases of highly pathogenic avian influenza, H5N1, under investigation in Washington ...