| When | Who | What |
| 1796 | Edward
Jenner | Smallpox
vaccine (though they didn't understand how or why it worked). Tested it on his
own child. |
| 1850 | Ignaz
Semmelweis | Advocated
washing hands to prevent spread of childbed fever |
| 1862 | Louis
Pasteur | Disproved
spontaneous generation, supported the Germ Theory |
| 1867 | Joseph
Lister | Implemented
the sterilization of medical instruments and washing of hands between procedures |
| 1876-1882 | Robert
Koch | Koch's
Postulates - determined a methodology for identifying pathogens, identified agents
that caused Cholera, Tuberculosis. Germ Theory gains more acceptance |
| 1885 | Louis
Pasteur | Rabies
Vaccine |
| 1928 | Alexander
Fleming | Discovered
penicillin |
| 1953 | Jonas
Salk | Polio
vaccine |
| 1980 | World
Health Organization | Declares
smallpox eradicated |
| 1983 | | Discover
and Identification of AIDS virus (HIV) |