“This is the second human case associated with this specific group of H5 viruses that is currently prevalent, and the first in the United States,” the CDC said.
The Colorado Department of Public Health and Environment (CDPHE) said the man is an inmate in the state under the age of 40 who worked on a commercial farm in Montrose County.
CDPHE said the man has recovered after experiencing exhaustion. It is currently isolated and treated with the antiviral drug oseltamivir.
“Repeatedly, the person tested negative for influenza,” Colorado officials said in a statement. “Because the person has been in close contact with infected poultry, the virus may be in the person’s nose without causing the infection.”
The CDC also said the discovery was likely the result of surface contamination.
“This positive human H5 case does not change the human health risk assessment,” the CDC said. “The Centers for Disease Control and Prevention is taking routine preparedness and prevention measures, which include an existing candidate vaccine virus that can be used to make a vaccine for people if needed.”
People at risk of infection due to regular contact with infected birds should take the precautions described on the CDC website. Avoid contact with poultry that appears sick or dead, and avoid contact with surfaces that appear to be contaminated with feces from wild or domestic birds. If you handle wild birds or poultry, wear gloves and wash your hands when finished. Wear a face mask and goggles if possible.