The cow-pox is a mild disease, and never fatal; the small-pox is a formidable one, and often fatal. The cow-pox is not infectious; the small-pox is highly so.
Smallpox vaccine
An Inquiry into the Causes and Effects of the Variolae Vaccinae...
1798
Found in 1 providers: grok
Cross Reference
1 source
"The joy I felt at the prospect before me of being the instrument destined to take away from the world one of its greatest calamities was so excessive that I sometimes found myself in a kind of reverie…"
Controversial"I have often been accused of being too sanguine in my expectations; but time will show whether I am right or wrong."
Strange & Unusual"I have been so much engaged in making experiments, that I have had no time to write letters."
Strange & Unusual"I have always endeavoured to act upon the principle, that what is right to be done, should be done with all our might."
Strange & Unusual"The deviation of man from the state in which he was originally placed by nature seems to have proved to him a prolific source of diseases."
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