| Date | 1684 |
| Author | Abercromby |
| Contribution | Proposed that syphilis was caused by a parasite. |
| Reference | Garrison & Morton |
| Notes | D. Abercromby. Circumstantial evidence or mere speculation? |
| Category | Causation |
| Pathogen Class | General |
Copyright © 2007- William C. Campbell. All rights reserved.