Colorado workers with bird flu toiled in heat, without effective protective gear - Reuters.com
- Colorado workers with bird flu toiled in heat, without effective protective gear Reuters.com
- More People Test Positive For Bird Flu In US The Weather Channel
- Colorado bird flu cases show how extreme heat may be complicating efforts to control the virus CNN
- Five agricultural workers in northeastern Colorado have now tested positive for bird flu Colorado Public Radio
- Six Colorado workers contracted bird flu, the most human cases in a state The Washington Post