| Date | 1810 |
| Author | Anon. |
| Contribution | Vaccination made compulsory in Sweden. |
| Reference | Anon. |
| Notes | Continuing success of empirical vaccine -- control of disease without knowledge of its causative agent. Chase gives the year as 1818. Dorothy Fisk, in Dr. Jenner of Berkeley, gives the year as 1811. |
| Category | Immunology |
| Pathogen Class | General |
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