When the blisters have ruptured, however, and the resulting lesions have become contaminated by numerous secondary forms of microorganisms, the correct recognition of the disease may be involved in considerable difficulty.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Some microorganisms are transmitted directly from one animal to another, and the diseases produced may be called contagious.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
It is just one more darkly pragmatic aspect of life as needed imperatively as microorganisms are needed to lunch on the deceased."
"Corpus of a Siam Mosquito"
Steven Sills