title: [The slow start of smallpox prevention].
mesh_terms: D004739:England; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D009426:Netherlands; D012899:Smallpox / Q000266:history* / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000266:history*
chemical_list: D012900:Smallpox Vaccine
vernacular_title: Over het moeizame begin van de pokkenpreventie.