The current H5N1 variant has been spreading among backyard and commercial chicken and turkey flocksin the U.S. This version caused serious infections among people and 40% of those who were hospitalized died.Ī different variant of H5N1 has also circulated since 1997, infecting more than 880 people, and it had a 50% case fatality rate. More than 1,500 people in China have been infected with the H7N9 strain, largely in outbreaks between 20. infections have been identified since 2002 two were transmitted from cats to humans in 2016. In 2002, H7N2 caused pinkeye and mild respiratory symptoms in people in the U.K. Many different bird flu viruses have infected humans worldwide since at least the 1990s, but health officials still say human infection is uncommon. Any genetic changes could indicate the virus is adapting to spread more readily from birds to people or other mammals. The CDC also is monitoring for genetic changes to the H5N1 bird flu virus that is currently circulating. Signals that could raise the public health risk might include multiple reports of virus infections in people from exposure to birds, or identification of spread from one person to another. When bird flu was detected at the farm in Montrose County, the inmates were asked to help kill and remove the birds.Īgriculture officials have reported an outbreak at one Montrose County farm with 58,000 broiler breeder chickens.ĭespite the infection, the CDC considers the threat to the general public to be low because spread of the virus to people requires close contact with an infected bird. The man was part of a crew of inmates nearing release who had been working at the farm before a case of bird flu was confirmed there on April 19, said Lisa Wiley, a spokeswoman for the Colorado Department of Corrections. Other people involved in the bird removal operation in Colorado have tested negative, but they are being retested out of an abundance of caution.
The man was isolated and is being treated with an antiviral drug. The man, who was under age 40, reported fatigue for a few days but has recovered, state health and CDC officials said in a statement. Centers for Disease Control and Prevention said Thursday evening that the infected man had been in a prerelease program and was helping to remove chickens from an infected farm. to test positive for bird flu in a recent outbreak that has led to the deaths of millions of chickens and turkeys, but federal officials say they still see little threat to the general public. DES MOINES, Iowa (AP) - A Colorado prison inmate has become the first person in the U.S.
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