In a matter of days, the number of states with dairy herds testing positive for bird flu has grown from nine to 12. The Wyoming Department of Agriculture (WDA) confirmed the presence of the virus in dairy cattle in the Equality State on June 7.
Other states reporting outbreaks in the last week include Minnesota on June 6 and Iowa on June 5. To date, ramped-up testing has confirmed the presence of bird flu in more than 80 dairy herds throughout the country, according to the CDC.
Since late March, the virus has been detected in herds in Colorado, Idaho, Kansas, Michigan, New Mexico, North Carolina, Ohio, South Dakota and Texas. Three dairy workers, one in Texas and two in Michigan have tested positive for the H5N1 virus but have since recovered.