A detail of experiments confirming the power of cow pox to protect the constitution from a subsequent attack of small pox, by proving the identity of the two diseases / by John Badcock.

  • Badcock, John, active 1816-1830.
Date:
1845
Catalogue details

Licence: Public Domain Mark

Credit: A detail of experiments confirming the power of cow pox to protect the constitution from a subsequent attack of small pox, by proving the identity of the two diseases / by John Badcock. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    Dr. Jenner's which had then been in use about forty years. He shewed, by beautifully engraved illustrations, the daily appearance of both vesicles, and clearly proved the greater activity of the new lymph. Dr. Trompeoj also, at a meeting of the Scientific Congress at Lucca, in 1844, remarked on this subject, that it is of great importance to resort fre- quently to the primary source of the virus by re-taking it from the cow, in order to obtain durable results. An important document, published by the Minister of Commerce, on vaccination as per- formed in France in 1843, strongly confirms the views which have been just advanced. After furnishing us with calculations on the durability of the vaccine influence, it con- cludes by advising us how to obtain active virus. It appears that in that year, there were 547,646 vaccinated, and of those 11,773 were attacked with small pox. Of the latter, 1294 became disfigured or infirm, and 1379 died in consequence of the disease. The report contains, as well, the following infor- mation : first, that vaccination loses its effi- cacy with time, but the small pox seldom attacks the vaccinated before ten, sometimes