In more persistent cases it may be found desirable to use a milking tube in order to prevent the repeated opening of the pustules during the operation of milking.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Again, the pustules may appear, one after another, on a single animal, in which case the duration of the disease is materially lengthened.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
An identical disease frequently appears upon horses, attacking their heels, and thence extending upward along the leg, producing, as it progresses, inflammation and swelling of the skin, followed later by pustules, which soon rupture, discharging a sticky, disagreeable secretion.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler