Edward Jenner:

The deviation of the Cow Pox from its true character appears to be very frequent; and when it does appear, it is, as far as I have seen, uniformly in the following manner: The vesicle, instead of being pellucid, and having a circular form, with its edges a little elevated, becomes of an opaque white, and its edges are more depressed than its centre, so that it resembles a small pearl. Sometimes it is surrounded by an erysipelatous inflammation.

— Edward Jenner Early Modern

Smallpox vaccine

Context

An Inquiry into the Causes and Effects of the Variolae Vaccinae, a Disease Discovered in Some of the Western Counties of England, Particularly Gloucestershire, and Known by the Name of the Cow Pox

Date / Period

1798

Source

https://www.gutenberg.org/files/33718/33718-h/33718-h.htm

Verification

Unverifiable

Explanation

Found in 1 providers: grok

Method

Cross Reference

Sources Checked

1 source

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