<prompt> Translate the following text to EnglishKila tumbo la wanyama hao ni mahali pa kuzaliana kwa bakteria ya E. coli, ambayo inakadiriwa kuambukiza kati ya asilimia 2 na 4 ya mifugo ya Marekani.  <response>: Each of their four stomachs is a breeding ground for the virulent E. coli bacteria, which is estimated to infect between 2 percent and 4 percent of U.S. livestock. 