| Date | 1873 |
| Author | Budd |
| Contribution | Recognized contagious nature of typhoid fever, and proposed, on epidemiological grounds, a microbiological causation. |
| Reference | Cirillo |
| Notes | One of many contributions to be found in his treatise on typhoid fever, published in 1873 (seven years before Eberth showed that his hypothesis was correct). His treatise was influential in expounding the value of hand-washing and numerous other hygienic measures. See 1839 Budd. |
| Category | Causation |
| Pathogen Class | Bacteria |
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