Age group and studies
|
Number vaccinated
|
E.V. No.
|
Deaths No.
|
Risk of complication per million (95% C.I.)a
|
Risk of death per million (95% C.I.)a
|
Case fatality risk per hundred (95% C.I.)a
|
---|
Age <1
| | | | | | | | | |
Neff 1967a
|
654,000
|
16
|
0
|
24.5
|
(14.0, 39.7)
|
0.0
|
(0.0, 5.6)
|
0.0
|
(0.0, 20.6)
|
Neff 1967b
|
31,000
|
3
|
0
|
96.8
|
(20.0, 283)
|
0.0
|
(0.0, 119)
|
0.0
|
(0.0, 70.8)
|
Lane 1969
|
614,000
|
5
|
0
|
8.1
|
(2.6, 19.0)
|
0.0
|
(0.0, 6.0)
|
0.0
|
(0.0, 52.2)
|
Lane 1970
|
17,000
|
1
|
0
|
58.8
|
(1.5, 328)
|
0.0
|
(0.0, 217)
|
0.0
|
(0.0, 97.5)
|
Ratner 1970
|
1
|
0
|
0
|
n/c
|
n/c
|
n/c
|
n/c
|
n/a
|
n/a
|
Neff 1972
|
32
|
0
|
0
|
n/c
|
n/c
|
n/c
|
n/c
|
n/a
|
n/a
|
Summary
|
1,316,033
|
25
|
0
|
19.0
|
(12.3, 28.0)
|
0.0
|
(0.0, 2.8)
|
0.0
|
(0.0, 13.7)
|
Age 1 to 4
| | | | | | | | | |
Neff 1967a
|
2,973,000
|
22
|
0
|
7.4
|
(4.6, 11.2)
|
0.0
|
(0.0, 1.2)
|
0.0
|
(0.0, 15.4)
|
Neff 1967b
|
142,000
|
9
|
0
|
63.4
|
(29.0, 120)
|
0.0
|
(0.0, 26.0)
|
0.0
|
(0.0, 33.6)
|
Lane 1969
|
2,733,000
|
31
|
0
|
11.3
|
(7.7, 16.1)
|
0.0
|
(0.0, 1.3)
|
0.0
|
(0.0, 11.2)
|
Lane 1970
|
317,000
|
14
|
0
|
44.2
|
(24.1, 74.1)
|
0.0
|
(0.0, 11.6)
|
0.0
|
(0.0, 23.2)
|
Ratner 1970
|
68,002
|
0
|
0
|
0.0
|
(0.0, 54.2)
|
0.0
|
(0.0, 54.2)
|
n/a
|
n/a
|
Neff 1972
|
517
|
0
|
0
|
0.0
|
(0.0, 7110)
|
0.0
|
(0.0, 7110)
|
n/a
|
n/a
|
Summary
|
6,233,519
|
76
|
0
|
12.2
|
(9.6, 15.3)
|
0.0
|
(0.0, 0.6)
|
0.0
|
(0.0, 4.7)
|
Age 5 to 19
| | | | | | | | | |
Neff 1967a
|
2,295,000
|
15
|
0
|
6.5
|
(3.7, 10.8)
|
0.0
|
(0.3, 1.6)
|
0.0
|
(0.0, 21.8)
|
Neff 1967b
|
110,000
|
8
|
0
|
72.7
|
(31.4, 143)
|
0.0
|
(0.3, 33.5)
|
0.0
|
(0.0, 36.9)
|
Lane 1969
|
1,959,000
|
14
|
0
|
7.1
|
(3.9, 12.0)
|
0.0
|
(0.3, 1.9)
|
0.0
|
(0.0, 23.2)
|
Lane 1970
|
229,000
|
8
|
0
|
34.9
|
(15.1, 68.8)
|
0.0
|
(0.3, 16.1)
|
0.0
|
(0.0, 36.9)
|
Ratner 1970b
|
193,721
|
3
|
0
|
15.5
|
(3.2, 45.3)
|
0.0
|
(0.3, 19.0)
|
0.0
|
(0.0, 70.8)
|
Summary
|
4,786,721
|
48
|
0
|
10.0
|
(7.4, 13.3)
|
0.0
|
(0.0, 0.8)
|
0.0
|
(0.0, 7.4)
|
Age 20 +
| | | | | | | | | |
Neff 1967a
|
317,000
|
1
|
0
|
3.2
|
(0.1, 17.6)
|
0.0
|
(0.3, 11.6)
|
0.0
|
(0.0, 97.5)
|
Neff 1967b
|
15,000
|
1
|
0
|
66.7
|
(1.7, 371)
|
0.0
|
(0.3, 246
|
0.0
|
(0.0, 97.5)
|
Lane 1969
|
288,000
|
7
|
0
|
24.3
|
(9.8, 50.1)
|
0.0
|
(0.3, 12.8)
|
0.0
|
(0.0, 41.0)
|
Lane 1970
|
33,000
|
1
|
0
|
30.3
|
(0.8, 169)
|
0.0
|
(0.3, 112
|
0.0
|
(0.0, 97.5)
|
Ratner 1970b
|
107,822
|
0
|
0
|
0.0
|
(0.0, 34.2)
|
0.0
|
(0.3, 34.2)
|
n/a
|
n/a
|
Summary
|
760,822
|
10
|
0
|
13.1
|
(6.3, 24.2)
|
0.0
|
(0.0, 4.8)
|
0.0
|
(0.0, 30.8)
|
All agesc
| | | | | | | | | |
Neff 1967a
|
6,239,000
|
54
|
0
|
8.6
|
(6.5, 11.3)
|
0.0
|
(0.0, 0.6)
|
0.0
|
(0.0, 6.6)
|
Neff 1967b
|
298,000
|
24
|
0
|
80.5
|
(51.6, 120)
|
0.0
|
(0.0, 12.4)
|
0.0
|
(0.0, 14.2)
|
Lane 1969
|
5,594,000
|
58
|
0
|
10.4
|
(7.9, 13.4)
|
0.0
|
(0.0, 0.7)
|
0.0
|
(0.0, 6.2)
|
Lane 1970
|
596,000
|
25
|
0
|
41.9
|
(27.1, 61.9)
|
0.0
|
(0.0, 6.2)
|
0.0
|
(0.0, 13.7)
|
Mellin 1970
|
109,000
|
5
|
0
|
45.9
|
(14.9, 107)
|
0.0
|
(0.0, 33.8)
|
0.0
|
(0.0, 52.2)
|
Ratner 1970
|
369,546
|
3
|
0
|
8.1
|
(1.7, 23.7)
|
0.0
|
(0.0, 10.0)
|
0.0
|
(0.0, 70.8)
|
Neff 1972
|
549
|
0
|
0
|
0.0
|
(0.0, 6697)
|
0.0
|
(0.0, 6697)
|
n/a
|
n/a
|
Summary
|
13,206,095
|
169
|
0
|
12.8
|
(10.9, 14.9)
|
0.0
|
(0.0, 0.3)
|
0.0
|
(0.0, 2.2)
|
- n/c = not calculated, n/a = not assessable aRisk and confidence intervals not calculated (n/c) for less that 100 vaccinations. Exact confidence intervals based on the binomial distribution. bThe Ratner study age groups, "Age 5 to 14" and "Age 15+", were counted in the Table age groups "Age 5 to 19" and "Age 20+", respectively. cAll ages group includes subjects whose age was unknown