| Date | 1802 |
| Author | Brown |
| Contribution | Vaccinated 500 people in Kentucky. |
| Reference | McNeill |
| Notes | Samuel Brown. Shows rapid spread of Jennerian method (protection against germs without knowledge of germs). Mc. Neil p. 256. Also in Garrison, p. 840. |
| Category | Immunology |
| Pathogen Class | General |
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