The US Department of Health announced yesterday (local time) three more suspected cases of bird flu among poultry farmers. In the US state of Colorado, three people are suspected of being infected with the H5 bird flu virus.
“There is no evidence of an unexpected increase in influenza cases in Colorado or other states affected by the H5 avian influenza outbreak in cattle and poultry,” the health agency said. All three had mild symptoms.
The investigation has begun.
Employees who culled animals infected with H5N1 avian influenza at a poultry facility became infected. The CDC sent a team to Colorado to support the investigation.
These cases are part of a widespread outbreak of the H5N1 avian influenza virus that is spreading worldwide among wild birds but has also infected poultry and many mammal species, including dairy cows in the United States.
Concern after disease outbreak in dairy cows
There, outbreaks of avian influenza in dairy cattle are of particular concern. In March, U.S. authorities reported the first outbreak of H5N1 in dairy cattle. Since then, 139 herds in a dozen states have been infected.
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