| Date | 1897 |
| Author | Calmette |
| Contribution | Began collaboration with Guerin that led to BCG vaccine for tuberculosis. |
| Reference | Lechevalier |
| Notes | Albert Calmette and Alphonse Guerin. The vaccine (BCG = bacille de Calmette et Guerin) does not seem to have been developed until after 1900, and its discovery thus does not properly belong to the Germ Theory Timeline. It is included because of the importance of the collaboration begun in 1897, and because Lee records it as having been developed in 1895. |
| Category | Immunology |
| Pathogen Class | Bacteria |
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