Repressing Disease in Cattle: The Career of Pennsylvania Veterinarian Leonard Pearson

Posted by on Sep 12, 2022 in | Comments Off on Repressing Disease in Cattle: The Career of Pennsylvania Veterinarian Leonard Pearson In 1900 there were 224,248 farms and nearly a million dairy cows in Pennsylvania. The livelihood of dairy farmers depended almost entirely on the health of their cows. Dairy cows were vulnerable to a variety of diseases, but the most feared was tuberculosis. In Pennsylvania, bovine tuberculosis killed more cows than any other infectious disease, and it often destroyed entire herds. Bovine...
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