John Brownlbe 
325 
as published refer only to cases and deaths, and give no detail of the character of 
the illness. 
TABLE IX. 
Cor'velation, Vaccinated and Unvaccinated. Recoveries and Deaths, and Cases 
Mild and Severe, for Epidemic in Gloucester, 1896. 
Recoveries 
Cases Mild 
Age Periods 
and Deaths 
and Severe 
0— 5 
5—10 
■94 
10—15 
•94 
•93 
15—20 
•77 
•75 
20—30 
•63 
•88 
30-40 
' -63 
•43 S 
•68 
40—50 
•63 
50—60 
GO— 
1 -63 
•60 
TABLE IX his. 
Correlation between Cases Mild and Severe and Recoveries and Deaths. 
Vaccinated and Unvaccinated (Macdonell). 
Recoveries and Deaths 
Mild and Severe 
Sheffield 
Glasgow, 1892—5 ... 
Glasgow, 1901 
•77 
•78 
•63 
•79" 
•91 
•51 
The way in which the protection against death from smallpox afforded by 
vaccination is gradually lost is of considerable interest. As shown in the appended 
table it gradually decreases from the date of vaccination up to the age of twenty- 
TABLE X. 
Correlation, Vaccinated and, Unvaccinated, Recoveries and, Deaths in 
Age Periods 
0— 5 
5—10 
10—15 
15—20 
20—25 
25—30 
30—35 
35—40 
40—45 
4.5—50 
50—55 
55— GO 
60—65 
65—70 
London 
185(j-61 
•34 
•65 
•59 
•66 
•65 
•70 
•76 
Various Epidemics. 
London 
1870-72 
4 
60 
59 
46 
31 
•42 
Sheffield 
1887 
1 
•79 
•78 
•76 
•67 
•49 
•55 
•53 
■38 
•64 
■49 
Gloucester 
1896 
1 
1 
■94 
■77 
•63 
1- 
1 
London 
1902 
1 
•77 
•93 
•74 
•61 
■67 
■51 
■43 
■74 
•46 
