title: Haffkine--A historical appreciation.
mesh_terms: D022121:Cholera Vaccines / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D007194:India; D010931:Plague Vaccine / Q000266:history*
chemical_list: D022121:Cholera Vaccines; D010931:Plague Vaccine