LIVE POLIO IRUS VACCINES

508 Efficacy-Field Evidence
TABLE 1. VACCINATION STATUS IN CZECHOSLOVAKIA IN 1959
(a) Number of children vaccinated with inactivated vaccine
(Report through 1 July 1959)
AGE
No. OF
INOCULA-
CZECH REGIONS SLOVAKIA TOTAL
GROUP TIONS NUMBER % NUMBER % NUMBER %
0 160,833 11.0 130,380 16.0 291,263 12.8
1 31,256 2.1 37,117 4.6 68,373 3.0
1-9 2 128,197 8.7 87,590 10.8 215,787 9.5
3 1,144,343 78.2 556,876 68.6 1,701,219 74.7
2+3 1,272,540 86.9 644,466 79.4 1,917,006 84.2
0 413,479 34.8 169,756 35.0 583,235 34.9
1 12,710 1.1 10,995 2.3 23,705 1.4
2 37,258 3.1 25,523 5.3 62,781 3.8
3 725,941 61.0 277,782 57.4 1,003,723 59.9
2+3 763,199 64.1 303,305 62.7 1,066,504 63.7
(b)
Number of children vaccinated with the fourth dose of Salk's vaccine in the region of Plzeii
(April-May 1959)
% FROM CHILDREN VACCINATED
AGE GROUP NUMBER OF VACCINATED THREE TIMES
2-10 years 49,058 68.7
(c)
Number of orally vaccinated children
(December 1958-February 1959)
TYPE 1 TYPES 1-3 TYPES 1-3-2
AGE
GROUP NUMBER %* NUMBER %* NUMBER %*
2-6
6-8
Total
114,064
29,313
143,377
73.0
34.0
59.1
101,487
25,803
127,290
64.9
29.9
52.5
90,386
24,124
114,510
57.8
28.0
47.2
* Percentage from number of children vaccinated three times with inactivated vaccine.
on a mass scale). This strict delimitation of
the experimental areas has the disadvantage that
it does not permit (in view of the relatively
small area of the regions) more general epidemiological
conclusions. I feel, however, that for
the purpose of our investigations, this method
was more suitable than the very variable experimental
conditions in the entire population, which
would not be appropriate, particularly when
using the live vaccine,