 Health officials say a farm worker in Colorado has caught and recovered from bird flu. It's the fourth human case reported in the U.S., but experts say the risk remains low as the virus spreads among dairy cows. Dairy workers in Texas and Michigan were also affected. And a short day on Wall Street ahead of the 4th of July, the Dow lost 23 points. The Nasdaq was up 159. The S&P added 28. This is CBS News.