Report of a preliminary survey of the camps of a portion of volunteer forces near Washington.

  • United States Sanitary Commission.
Date:
[1861]
Catalogue details

Licence: Public Domain Mark

Credit: Report of a preliminary survey of the camps of a portion of volunteer forces near Washington. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

    19/32 (page 19)
    servations. It is that on the average of more than 14,000 experiments (an immense majority performed at ages between twenty and thirty years), 34 out of every 100 persons revac- cinated developed the same sort of vesicle as would arise from a first insertion of vaccine lymph. And it is important to observe that this renewed susceptibility to cowpox did evi- dently not depend, so far as could be traced, on any original ineffectiveness of the former vaccination; for (as is expressly set forth in the second part of the table), among the 14,384 subjects of vaccination, there were 7,845 who presented strictly normal scars of previous vaccination. Yet nearly a third of this large number gave again exactly such local phenomena as arise in children when vaccinated for the first time. It does not follow from this, however, that every third man would have taken the smallpox if exposed to the contagion; but that they would have been endangered admits of no doubt. Vaccination of the Wir- ] temberg army in the > five years 183H-5*. j 14,384 Ratio of success per 1,000 cases vaccinated. Perfect success. 340.2 Modified success. No success. 2C0.8 411.5 13,681 of the above mentioned 14,384 military vaccinations being classified according to the marks of previous vaccination or smallpox, the results were as under. Of cases with nor- Of cases with defec- Of cases with no cic- Of cases bearing mal cicatrices of tive cicatrices of atrices of vaccina- marksol previous Degree-of suc- vaccination there vaccination there tion or smallpox, smallpox, there cess of were 7,845, and were 3,545, and there were 2,02o, were 266, and a- revaceination. among these the among these the and among these mong the^e the results per 1,000 results per 1,000 the results per results as per were— were— 1,000 were— 1,000 were— Perfect. 310.4 280.7 337.3 319.5 Modified 280.5 259 191.1 248.1 None . . . 409.2 400.4 471.6 432.3