A person in Colorado tested positive for a version of avian influenza, federal officials said, marking the first known human case in the U.S. of a bird flu that has ravaged poultry flocks for months.
The unidentified person had direct contact with poultry and was working to destroy birds believed to have a version of H5N1 bird flu, the Centers for Disease Control and Prevention said on Thursday. The person’s only symptom was fatigue, the agency said. An earlier case in Decembe