In the quarters and on the teat skin of infected cows or heifers. During milking via hands, equipment and towels used for milking preparation. A few cows repeatedly have clinical flare-ups. Culture of milk samples. Resistant to penicillin-type antibiotics.
Most antibiotics fail to reach infected tissue and bacteria.
Use separate paper towels for prepping each cow. Dip the teats of all cows post-milking with a licensed teat dip. Milk infected cows last or with a separate unit. Dry treat all cows. Purchase uninfected cows or heifers.