I think I've got a nontuberculosis mycobacterium species circulating though my dairy herd causing devastating fast-acting mastitis. Has anyone else had experience with this issue? The reason I say mycobacterium is because of a milk culture done on a goat (last year) when she had pretty intense mastitis. Long story, but I finally got the results back of that culture back today (1 year and 2 weeks after submitting it :veryangry: ) and mycobacterium was the culpit of Falsie's mastitis. CAE didn't help her much either (please see the post "Hard Udder" in this forum - that's the goat I'm talking about). Right after we put this goat down another young goat, Allie (also CAE pos.), came down with mastitis, sepsis, fever, and anorexia (please see post "Sick Doe" in this forum). I saved her, but this past Tuesday I lost another young promising milker, Suzie (also probably CAE pos., but too young for the ELISA tests to be accurate) to a very fast-acting form of mastitis resulting in sepsis, fever, shock, and death in almost 24 hours (please see the post "Ok . . . Stop making milk now, Suzie" in the Dairy Diaries forum). :tears: I was unable to get cultures on either Allie or Suzie's milk due to budget constraints. Still, call me crazy . . . but I have a feeling that all three of these goats had the same thing. Both Falsie and Allie presented high fevers (106F+), sudden onset of severe one-sided mastitis & edema, sepsis, anorexia, unresponsiveness to penicillin (IM and teat infusion) & cephapirin teat infusions, lameness in the rear legs, pneumonia-like symptoms, etc. Suzie didn't live long enough for me to observe anything but one-sided mastitis, fever over 106F, sepsis, lameness, trouble breathing, shock, and death. :sigh: Has anyone had experience with this particular bug? I would like to hear your thoughts on the matter including the elimination of this pathogen.