title: [The history of active immunization. Prevention is better than healing].
authors: Govi-Verlag Pharmazeutischer Verlag GmbH, Carl-Mannich-Str. 26, 65760 Eschborn. helmstaedter@govi.de
authors: Axel
authors: A
authors: Helmstädter
mesh_terms: D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007114:Immunization / Q000266:history*; D012899:Smallpox / Q000266:history* / Q000276:immunology*; D012900:Smallpox Vaccine / Q000266:history*
chemical_list: D012900:Smallpox Vaccine