TABLE 3.
Efficacy of DTP vaccines in six trials conducted in four countries from 1990 to 1995
| Study location (reference) | Vaccine manufacturer | % Efficacy againsta:
|
|
|---|---|---|---|
| Mild and typical pertussis | Typical pertussis | ||
| Senegal (708) | Pasteur Mérieux Sérums et Vaccins | 92 (86-99) | |
| Sweden (310) | Connaught USA | 41 (30-51) | 48 (37-58) |
| Italy (293) | Connaught USA | 23 (1-40) | 36 (14-52) |
| Germany (719) | Lederle | 83 (76-88) | 93 (89-96) |
| Germany (697) | Behringwerke AG or SmithKline Beecham Biologicals | 81 (68-89) | 89 (77-95) |
| Germany (464) | Behringwerke AG | 96 (71-100) | |
a
95% CI is given in parentheses.