Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effectiveness of typhoid vaccine in the British Army (Anglo-Boer War, 1899 and World War I, 1915).
| Anglo-Boer War | Immunized | Unimmunized | p |
|---|---|---|---|
| British Army | 14,626 (4.46%) | 313,618 (95.54%) | |
| Disease | 1417 (9.7%) | 48,754 (15.5%) | <0.0000001 |
| Case-fatality rate | 163 (11.5%) | 6991 (14.34%) | 0.002965 |
| World War I | |||
| British Army | 604,420 (94%) | 38,580 (6%) | |
| Disease | 570 (0.094%) | 295 (0.764%) | <0.0000001 |
| Case-fatality rate | 34 (5.96%) | 89 (30.2%) | <0.0000001 |
