Age group and studies
|
Number vaccinated
|
V.N. 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
|
1
|
0
|
1.5
|
(0.04, 8.5)
|
0.0
|
(0.0, 5.6)
|
0.0
|
(0.0, 97.5)
|
Neff 1967b
|
31,000
|
0
|
0
|
0.0
|
(0.0, 122)
|
0.0
|
(0.0, 119.0)
|
n/a
|
n/a
|
Lane 1969
|
614,000
|
0
|
0
|
0.0
|
(0.0, 6.0)
|
0.0
|
(0.0, 6.0)
|
n/a
|
n/a
|
Lane 1970
|
17,000
|
0
|
0
|
0.0
|
(0.0, 217)
|
0.0
|
(0.0, 217)
|
n/a
|
n/a
|
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
|
1
|
0
|
0.8
|
(0.02, 4.2)
|
0.0
|
(0.0, 2.8)
|
0.0
|
(0.0, 97.5)
|
Age 1 to 4
| | | | | | | | | |
Neff 1967a
|
2,973,000
|
1
|
0
|
0.3
|
(0.01, 1.9)
|
0.0
|
(0.0, 1.2)
|
0.0
|
(0.0, 97.5)
|
Neff 1967b
|
142,000
|
0
|
0
|
0.0
|
(0.0, 26.0)
|
0.0
|
(0.0, 26.0)
|
n/a
|
n/a
|
Lane 1969
|
2,733,000
|
1
|
0
|
0.4
|
(0.01, 2.0)
|
0.0
|
(0.0, 1.3)
|
0.0
|
(0.0, 97.5)
|
Lane 1970
|
317,000
|
1
|
0
|
3.2
|
(0.08, 17.6)
|
0.0
|
(0.0, 11.6)
|
0.0
|
(0.0, 97.5)
|
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
|
3
|
0
|
0.5
|
(0.1, 1.4)
|
0.0
|
(0.0, 0.6)
|
0.0
|
(0.0, 70.8)
|
Age 5 to 19
| | | | | | | | | |
Neff 1967a
|
2,295,000
|
3
|
0
|
1.3
|
(0.3, 3.8)
|
0.0
|
(0.0, 1.6)
|
0.0
|
(0.0, 70.6)
|
Neff 1967b
|
110,000
|
0
|
0
|
0
|
(0.0, 33.5)
|
0.0
|
(0.0, 33.5)
|
n/a
|
n/a
|
Lane 1969
|
1,959,000
|
2
|
2
|
1.0
|
(0.1, 3.7)
|
1.0
|
(0.1, 3.7)
|
100
|
(15.8, 100)
|
Lane 1970
|
229,000
|
0
|
0
|
0
|
(0.0, 16.1)
|
0.0
|
(0.0, 16.1)
|
n/a
|
n/a
|
Ratner 1970b
|
193,721
|
0
|
0
|
0
|
(0.0, 19.0)
|
0.0
|
(0.0, 19.0)
|
n/a
|
n/a
|
Summary
|
4,786,721
|
5
|
2
|
1.0
|
(0.34, 2.44)
|
0.4
|
(0.05, 1.5)
|
40.0
|
(5.3, 85.3)
|
Age 20 +
| | | | | | | | | |
Neff 1967a
|
317,000
|
2
|
0
|
6.3
|
(0.8, 22.8)
|
0.0
|
(0.0, 11.6)
|
0.0
|
(0.0, 84.2)
|
Neff 1967b
|
15,000
|
0
|
0
|
0.0
|
(0.0, 246)
|
0.0
|
(0.0, 246)
|
n/a
|
n/a
|
Lane 1969
|
288,000
|
2
|
0
|
6.9
|
(0.8, 25.1)
|
0.0
|
(0.0, 12.8)
|
0.0
|
(0.0, 84.2)
|
Lane 1970
|
33,000
|
0
|
0
|
0.0
|
(0.0, 112)
|
0.0
|
(0.0, 112)
|
n/a
|
n/a
|
Ratner 1970b
|
107,822
|
0
|
0
|
0.0
|
(0.0, 34.2)
|
0.0
|
(0.0, 34.2)
|
n/a
|
n/a
|
Summary
|
760,822
|
4
|
0
|
5.3
|
(1.4, 13.5)
|
0.0
|
(0.0, 4.8)
|
0.0
|
(0.0, 60.2)
|
All agesc
| | | | | | | | | |
Neff 1967a
|
6,239,000
|
7
|
0
|
1.1
|
(0.4, 2.3)
|
0.0
|
(0.0, 0.6)
|
0.0
|
(0.0, 41.1)
|
Neff 1967b
|
298,000
|
0
|
0
|
0.0
|
(0.0, 12.4)
|
0.0
|
(0.0, 12.4)
|
n/a
|
n/a
|
Lane 1969
|
5,594,000
|
5
|
2
|
0.9
|
(0.3, 2.1)
|
0.4
|
(0.04, 1.3)
|
40.0
|
(5.3, 85.3)
|
Lane 1970
|
596,000
|
1
|
0
|
1.7
|
(0.04, 9.3)
|
0.0
|
(0.0, 6.2)
|
0.0
|
(0.0, 97.5
|
Mellin 1970
|
109,000
|
0
|
0
|
0.0
|
(0.0, 33.8)
|
0.0
|
(0.0, 33.8)
|
n/a
|
n/a
|
Ratner 1970
|
369,546
|
0
|
0
|
0.0
|
(0.0, 10.0)
|
0.0
|
(0.0, 10.0)
|
n/a
|
n/a
|
Neff 1972
|
549
|
0
|
0
|
0.0
|
(0.0, 6697)
|
0.0
|
(0.0, 6697)
|
n/a
|
n/a
|
Summary
|
13,206,095
|
13
|
2
|
1.0
|
(0.5, 1.7)
|
0.2
|
(0.02, 0.5)
|
15.4
|
(1.9, 45.4)
|
- 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