Federal agencies with competing interests are slowing the country’s ability to track and control an outbreak of highly virulent bird flu that for the first time is infecting cows in the United States‚ according to government officials and health and industry experts. The response has echoes of the early days of 2020‚ when the coronavirus began its deadly march around the world. Today‚ some officials and experts express frustration that more livestock herds aren’t being tested for avian flu‚...