 Bird flu has infected six farm workers in Colorado this month, the most in any state, as health officials stress preparedness. They said temperatures soaring above 104 degrees made it difficult for the workers to wear the required full body suits, goggles, and N95 masks, which are designed to protect them from the bird flu virus. Michael Toscano, CBS News. Sneezing, coughing, stuffy nose, runny nose, post-nasal drip, interrupted sleeping. I just was groggy at the end of the day.