| Date | 1898 |
| Author | Shiga |
| Contribution | Reported bacillus as agent of dysentery, naming it Bacillus dysenteriae (now Shigella). |
| Reference | Lechevalier |
| Notes | Kiyoshi Shiga. Publlished in a series of papers, in German, in 1898 (Garrison gives previous year as year of discovery). Recognizing the limitation of Koch's postulates for causation (germ present in all cases, absent in others, similarly pathogenic in animals) Shiga added a fourth criterion: agglutination of germs in serum of patient. This work on acute dysentery was done before Shiga (a Kitasato pupil) went to work with Ehrlich. The agent of another type of bacterial dysentery was reported by Flexner, see 1900. |
| Category | Causation |
| Pathogen Class | Bacteria |
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