JEFFERSON CITY, Mo. (AP) – Health officials say there’s no evidence the bird flu is spreading between people after investigating a mysterious Missouri infection. The illness reported last month was different from the 30 other bird flu infections in the U.S. so far this year. Those cases have been in farmworkers who had contact with infected dairy cows or chickens. 

There was no known contact with an infected animal in the Missouri case but health officials say that’s the only remaining explanation. The bird flu virus has been spreading widely in the U.S. among wild birds, poultry, cows and a number of other animals.